On 10 November 2021, FIFA released the awaited 2021 edition of its Commentary to the Regulations on the Status and Transfer of Players (RSTP). The new edition of the Commentary on RSTP will replace the first Commentary edition released in 2007.

The consequences of terminating a contract will depend on whether there is just cause, or possibly sporting just cause, or not, and whether one is within the protected period of three / two years. Both the player and the club may be liable to pay compensation and could even risk sporting sanctions.