Release Clause: £17.75m Cristian Tello is yet another Barcelona player who isn't a first team regular, but is still supremely gifted. He's currently at Porto on loan, but you can still swoop in with a release clause bid. The 23-year-old has pretty much everything you look for in a winger, and can play on either flank, particularly when deployed as an Inside Forward. He's a worthy investment who will last for seasons to come.