The transfer window opens on Jan. 1, kicking off a month of gossip and speculation. Ahead of that, Mark Ogden presents his A to Z of all things transfer-related.
A = Agent: No transfer gets done nowadays without an agent to grease the wheels for the player, buying club or selling club.
B = Bosman: It is now 21 years since Belgian footballer Jean-Marc Bosman won the right for footballers to move as free agents at the end of their contracts. Whether it was a blessing or a curse continues to be debated, but almost every transfer window features "Bosman" deals.