Remember that contract dispute on here recently?

The Chief Exec: A written request is the worst thing for a player or an agent. Every contract has an annual loyalty bonus built in and even if a player is sold in the most acrimonious circumstances, as long as he didn't hand in a transfer request the club has to pay that for the remainder of his contract. Players and agents don't want to lose that so you end up doing this dance.

Read more at http://www.fourfourtwo.com/features/truth-behind-transfer-window-rumour-mill#71e33Kjm0MS2yYai.99