Release Clause: £8.5m Sergi Samper may look like a risky signing, but isn't that what Football Manager is all about? You're investing in the future, and if he reaches his potential, that £8.5m will be the best you ever spend. At 20 years old, he won't be starting your first team games anytime soon, but if you have some money to invest in youth, make sure Samper is on the shopping list. He could grow into a phenomenal defensive midfielder.