. "retain and transfer system" . "clearance" . "transfer list" . "transfer his registration" . "retain his services" . "free transfer" . "transfer listed" . "retained list" . . "retained his Football League registration" . . . "retain-and-transfer" . "placed on the transfer list" . "listed him for transfer" . "listed for transfer" . "released on a free transfer" . "Retain and transfer system" . "retained his services" . "retained" . "services were retained" . "\\\"retain and transfer\\\" system" . "restrictions on their freedom of movement" . "restrictions on the movement of players from one club to another" . "transfer-listed" . "Retain and transfer system" .