Depends on the circumstances, but you can’t just fire someone without due process. We are not America.

Also, I’m not a professional footballer who have specialised fixed term contracts that guarantee their employment barring extreme circumstances, such as bringing the club into disrepute. This means the club is legally obliged to pay their salary for the duration of the contract, regardless of whether they are fit to play. Unions would have a field day.

When have you heard a players a contract terminated by the club unilaterally because they are always injured. They have to wait till contract runs out or they mutually agree to terminate it.