Luis Suárez has a £3 million reason not to bite another player, as Barcelona has included a provision in his contract to protect against themselves against a repeat of his previous behavior.

Suárez will earn £10 million per season at Barcelona, which makes him the fourth highest-paid player at the club behind Lionel Messi, Neymar and Andrés Iniesta.

Suárez will begin his first season at Barcelona on a suspension given to him by FIFA.

Luis Suárez's appeal for his length ban has been rejected by FIFA.

Suárez has been banned nine competitive international matches and four months from all football.

A statement from FIFA read: "The FIFA Appeal Committee has decided to reject the appeals lodged by both the Uruguayan player Luis Suárez and the Uruguayan FA, and to confirm the decision rendered by the FIFA Disciplinary Committee on 25 June 2014 in its entirety.

"The terms of the decision taken by the FIFA Appeal Committee were communicated to the player and the Uruguayan FA [on Thursday].

"The relevant decision is not yet final and binding, i.e. an appeal to the Court of Arbitration of Sport (CAS) is still possible (cf. art. 67 par. 1 of the FIFA Statutes) by the player and/or the Uruguayan FA, subject to certain conditions."