The fee that is paid by a club to purchase a player from his former club is usually called the transfer fee. To amortise the fee over the term of the contract is to divide the fee by the number of years over which the club will own the player and book the annual cost to each year's profit and loss account. Thus if you pay 10 million for a player to own him for 10 years, you book a fee of 1 million to your profit and loss account every year; this is amortisation over the term of the contract.