9. Grzegorz Krychowiak
It's usually a good sign when a manager moves clubs and takes a particular player with him. So when Polish hard man Grzegorz Krychowiak joined manager Unai Emery at PSG this summer, having worked together at Sevilla, you can be fairly sure that the midfielder has something about him. And that something is broadly tackling -- lots of tackling, and lots of hard tackling. "I've not coached many players who will tell their coach they're willing to play through the pain barrier for you," said Emery when discussing his man, who describes himself as being "very aggressive." Indeed.