Chelsea could reportedly make another move for a Chelsea centre-back this summer, despite already having one of the largest squads in the Premier League. The potential arrival would further increase the number of first-team players at the club and intensify the pressure on the Blues to sell unwanted players.
The London club have been extremely active in the transfer market and have continued reshaping their squad under manager Xabi Alonso. Chelsea have already invested heavily in several positions, while also adding experienced players and younger talents to their squad.
However, their aggressive recruitment has created another problem: squad size.
With the possibility of another Chelsea centre-back arriving, the Blues could have as many as 43 players within their wider first-team group.
That could create a major registration headache before the new season gets underway.
Chelsea Continue Their Busy Transfer Window
Chelsea have been one of the busiest clubs in the transfer market.
Under Alonso, the Blues appear determined to build a squad capable of competing across multiple competitions. The new manager has reportedly been given greater influence over recruitment and has targeted a mixture of experience and younger players.
Experienced additions have included Brighton striker Danny Welbeck and Brentford midfielder Jordan Henderson, while Chelsea have also invested heavily in younger players.
Morgan Rogers reportedly arrived from Aston Villa for a British-record fee of £117 million, while another £43 million was spent on Atalanta wing-back Marco Palestra.
The club have also agreed a deal for Rayo Vallecano left-back Pep Chavarria.
The 28-year-old is expected to become Chelsea’s 42nd first-team squad player once his medical is completed.
And the number could rise again.
Chelsea Linked With Bologna Defender Jhon Lucumi
According to Italian reports, Chelsea are among the clubs interested in Bologna centre-back Jhon Lucumi.
The Colombia international has established himself as an important defender in Serie A since joining Bologna in 2022.
Lucumi has made more than 150 appearances for the Italian club and has become a key figure in their defence.
His performances have also coincided with one of the most successful periods in Bologna’s recent history.
During the 2023/24 campaign, Bologna secured qualification for the Champions League for the first time in around six decades.
The club also enjoyed domestic success by winning the Coppa Italia in 2025 after defeating AC Milan in the final.
Those achievements have helped increase interest in Lucumi, with several clubs reportedly monitoring his situation.
Juventus Also Interested in Lucumi
Chelsea are not believed to be the only major club interested in the defender.
Juventus are reportedly leading the race and have already made contact with Bologna regarding a potential transfer.
The Italian giants are understood to be exploring different ways of completing the deal, including the possibility of involving players in a swap arrangement.
Chelsea’s financial strength could give them an advantage in negotiations, but there is one major obstacle.
The Blues need to sell.
Why Chelsea Need to Reduce Their Squad
Chelsea’s huge squad has become one of the biggest talking points surrounding the club.
Premier League rules allow clubs to register a maximum of 25 senior players in their squad. Players who qualify as under-21s are exempt from that limit.
Chelsea currently have a significant number of senior players competing for places, meaning the club must make difficult decisions before the transfer window closes.
Signing another defender would only increase that pressure.
Chelsea therefore need to balance incoming transfers with departures.
The club could either sell players who are no longer part of Alonso’s plans or leave unwanted senior players out of the Premier League squad.
Neither option would be particularly straightforward.
Trevoh Chalobah Expected to Leave
One potential departure could help Chelsea solve part of the problem.
Trevoh Chalobah is reportedly expected to leave Stamford Bridge on a permanent transfer, with Como understood to be interested in securing his services.
His departure would create additional space in Chelsea’s squad.
However, the Blues would still have several players competing for positions in central defence.
That includes Benoît Badiashile and Axel Disasi, who have both faced uncertainty over their futures.
If Chelsea decide to bring in another centre-back, the futures of those defenders could become even more complicated.
Badiashile and Disasi Face Uncertain Futures
Badiashile joined Chelsea with a strong reputation after impressing in France, but his time in London has not developed as many expected.
Disasi has also experienced an inconsistent spell at Stamford Bridge.
With the club continuing to recruit defensive players, both could find themselves further down the pecking order.
That could make them candidates for transfers before the window closes.
Chelsea’s priority may therefore be to move some of their existing defenders before adding another one.
Why Alonso Could Want Another Centre-Back
Chelsea’s interest in Lucumi could make more sense when considering Alonso’s preferred tactical system.
The Spaniard is expected to use a 3-4-3 formation, which requires three central defenders rather than the traditional two.
That means having enough quality centre-backs is particularly important.
A back three also places significant demands on defenders.
They must be comfortable defending in wide areas, covering space behind wing-backs and progressing the ball from the back.
Lucumi’s experience could therefore make him an attractive option if Chelsea want another reliable defender capable of operating within Alonso’s system.
Chelsea Are Building Around a Back Three
The expected tactical changes could explain some of Chelsea’s defensive recruitment.
A 3-4-3 formation relies heavily on wing-backs, with those players expected to provide width and contribute in both attack and defence.
Chelsea have already invested in players who can operate in those positions.
The arrival of new wing-backs should create competition for established players such as Malo Gusto and Reece James.
It also gives Alonso more flexibility when selecting his starting XI.
Maxence Lacroix Adds More Defensive Depth
Chelsea have also strengthened their central defence with the signing of Maxence Lacroix from Crystal Palace.
The France international reportedly joined for a fee of around £52 million.
Lacroix brings Premier League experience and athleticism to the backline, potentially making him an important part of Alonso’s plans.
His arrival also raises questions about why Chelsea would need another centre-back.
If Lucumi were to arrive as well, Chelsea would have an extremely deep group of central defenders.
That could make departures unavoidable.
New Wing-Back Options Add to Competition
Chelsea’s recruitment has not been limited to centre-backs.
The Blues have also added players capable of operating in wide defensive positions.
The arrival of Marco Palestra gives Alonso another option at wing-back, while Pep Chavarria can also provide depth on the left.
Valentin Barco is another versatile player who can operate in several positions.
Although primarily a midfielder, Barco can also play at left-back and left wing-back.
Having versatile players could be particularly valuable if Alonso adopts a 3-4-3 system.
Chelsea’s Squad Size Could Become a Major Problem
The biggest challenge for Chelsea is no longer simply attracting players.
It is finding room for them.
The club’s recruitment strategy has produced a huge number of players, and not all of them can realistically receive regular first-team football.
The Premier League’s squad registration rules make the situation even more complicated.
Chelsea could therefore face a summer of significant departures alongside their incoming transfers.
A new Chelsea centre-back would only increase the pressure.
Could Chelsea Still Sign Lucumi?
It remains to be seen whether Chelsea will actually make a formal move for Lucumi.
The reports indicate interest, but being linked with a player does not necessarily mean a transfer will happen.
Juventus are reportedly ahead in the race, while Bologna would have to decide whether to sell one of their key defenders.
Chelsea would also have to determine whether signing another centre-back makes sense given the players already available to Alonso.
The club may ultimately decide that selling existing defenders is more important than adding another one.
What Chelsea Must Do Before the Transfer Window Closes
Chelsea’s recruitment strategy has created an unusual situation.
The club have shown their willingness to spend heavily, but they now need to create space within the squad.
Several players could therefore leave before the transfer window closes.
The most logical solution would be to sell players who are not expected to feature regularly under Alonso.
That would allow Chelsea to reduce the size of the squad while potentially raising additional funds.
Only then would another major defensive signing become easier to justify.
Final Thoughts
Chelsea’s reported interest in Jhon Lucumi highlights the ambition of the club under Xabi Alonso, but it also demonstrates the difficult squad-management situation facing the Blues.
Chelsea have already assembled an enormous group of players and are continuing to strengthen several positions. A move for another centre-back could give Alonso more options in his expected 3-4-3 system, but it would also increase the pressure to move players out.
With Trevoh Chalobah reportedly close to leaving and defenders such as Benoît Badiashile and Axel Disasi facing uncertain futures, Chelsea could have a busy final stage of the transfer window.
For now, the biggest question may not be who Chelsea can sign next, but who they can sell first.
Frequently Asked Questions
Who is Chelsea reportedly interested in signing?
Chelsea have reportedly been linked with Bologna centre-back Jhon Lucumi, who has established himself as an important defender in Serie A.
Why does Chelsea need another centre-back?
If Xabi Alonso uses his preferred 3-4-3 system, Chelsea would regularly need three central defenders. Additional depth could therefore be useful across a long season.
Does Chelsea need to sell players?
Yes. Chelsea have a very large senior squad, while Premier League rules limit clubs to 25 registered senior players. Under-21 players are exempt from that limit.
Which Chelsea defenders could leave?
Trevoh Chalobah has been linked with a permanent move away, while Benoît Badiashile and Axel Disasi have also faced uncertainty regarding their futures.
Who is leading the race for Jhon Lucumi?
Italian reports have suggested Juventus are currently among the strongest contenders for Lucumi, although Chelsea have also reportedly shown interest.