I had an amazing young Brazilian defender called Emerson, bought him for £6m and he had a great first season with me. Juventus were interested and he kicked up a stink about me not selling them, he threatened to ruin squad harmony so I let him go for £19.25m. He only got 10 games with them and was then transfer listed, so I bought him back for £12m. So all in all he was almost free!
I only just remembered as I was typing this about the threats he made though and now I'm a bit annoyed I bought him back. Having said that, he'll definitely have another good season and at the very least I might be able to make more profit on him again as he is only 24.