They're functionally the same thing. The player walks away from an already agreed-to sum of money to go into free agency. With that in mind, here are 10 players with opt-out/player option ...

Man Utd player ratings vs Tottenham Andre Onana: 6 Did well to get down and save Lucas Bergvall's shot but left it in Maddison's path. A hatful more saves followed. Noussair Mazraoui: 7 Defended well.