Chelsea have signed Emiliano Martínez from Aston Villa for £7.5m, and the move takes their total to eight deals in the past four years. No two Premier League clubs have exchanged more players, on permanent or loan deals, in that period. The latest move is not a one-off. It sits on top of a transfer link that now runs deeper than any other domestic pairing.

The scale of the exchange

Martínez arrives after a period in which Chelsea have paid Villa £163.5m for players since 2022. Villa have spent £102.5m on Chelsea players in the same span, including Axel Disasi's loan fee. The flow has gone both ways, even if Chelsea have spent more overall.

That volume gives the relationship its edge. Nicolas Jackson is already part of the same recent movement between the clubs, and the BBC reported that Chelsea co-owner Behdad Eghbali and Villa owner Nassef Sawiris have developed a close working relationship and have communicated directly over transfer business. BlueCo took control of Chelsea in 2022, and the business since then has followed the sort of pattern that gets noticed quickly in a league where clubs rarely trade this often with the same rival.

The ownership link and the asterisk

There is a caveat worth keeping in mind. The BBC also said a timeline on its own is not evidence that the moves were related, and that is the correct caution. Garnacho's move to Villa came two days after Rogers signed for Chelsea, while Jackson's permanent transfer went through 38 days after the Rogers move. Those gaps are close enough to fuel suspicion, but not close enough on their own to prove coordination.

Uefa can scrutinise transfers between the same clubs completed within 45 days of each other. That adds another reason these deals draw attention, even if scrutiny is not the same as wrongdoing.

Martínez said of the move: "Coming to Chelsea, for me and my family, was an easy decision to make and I'm just over the moon - I can't wait to get started." He also said: "I want to be successful here. I'm someone who wants to win at everything I do and I want to bring that here to this football club because it's a football club that wins titles, so I think it's a good match."

Those comments fit the move, but the larger story is still the same: Chelsea and Villa have become the Premier League's busiest transfer partners, and the latest £7.5m deal only extends that run.

Written by Jack Mercer with AI-assisted research, cross-checked against 1 outlet. How we work →