To get this trophy, you'll have to sign a loan player from the EASFC Catalogue. To do this, all you need to is go to the Catalogue by pressing R3 and buying one of the loan players using your FIFA Coins. The first loan player you can unlock in this game is Jan Lecjaks at Level 5 for 500 coins. Just highlight him (or any other loan player available to you), press X and then select 'Redeem Item' and the trophy will be unlocked.