But as clubs and players alike look to secure their future, who are the most lucrative Premier League stars - and how much would it cost for rivals to secure their services? Many of the top names on this list will come as no surprise, but there are a couple of players on this list that could raise some eyebrows.
What’s more, some other players didn’t make the cut; it was a surprise to this journalist to see that neither Mo Salah or Virgil Van Dijk feature anywhere near the top of the watchlist, and Liverpool fans aren’t likely to be impressed either.
Honourable mentions go to Newcastle’s Alexander Isak and Chelsea’s Moises Caicedo, both of whom were right on the cusp of making this list. Here are the 13 most expensive Premier League players, according to Transfermarkt - and how much they are worth to their respective clubs.
5. Declan Rice - £101m
According to Transfermarkt, Arsenal and England midfielder Declan Rice is valued at £101m. Adding on the infamous "English tax" he would cost rival teams a pretty penny to move away from his club. | Julian Finney Photo: Julian Finney
6. Martin Odegaard - £92m
Having quickly become a fan favourite at Arsenal, Martin Odegaard is highly valued by both the club and Transfermarkt. The Real Madrid alumnus struggled to make an impression in Spain but has flourished in London. | Arsenal FC via Getty Images Photo: Arsenal FC via Getty Images
7. Julian Alvarez - £75m
Julian Alvarez has been linked with a move to Atletico Madrid and PSG - but Transfermarkt expects they will need to dig deep into their pockets to poach the Argentinian forward. | Getty Images Photo: Getty Images
8. Bruno Guimaraes - £71m
While valued at £71m by Transfermarkt, Newcastle midfielder Bruno Guimaraes also has a £100m release clause in his contract. | Getty Images Photo: Getty Images