The summer transfer window doesn't officially open until the start of July, but already teams across Europe are looking to get their business sorted.
In a World Cup year, it's often difficult to judge whether a move should be made early or late, with the risks of either a great tournament or major injury affecting a player's potential value one way or another.
Irrespective of that, every team has certain needs in either one or multiple positions, and they will be looking to address that whenever the opportunity arises ahead of next season's big kick-off in April.
It's worth noting that this list is about staying realistic - every team would love to sign Lionel Messi, but it just isn't going to happen. Unfortunately for everyone apart from Barcelona and Real Madrid, he and Cristiano Ronaldo are tied down to their respective clubs for a few more years yet.
That doesn't mean there aren't good players who might be available, however, and it could well prove to be an exciting few months before the window slams shut.
So, with all that in mind, have a look at our suggestions and let us know your thoughts on which player your club should sign...