Suggestion: Players with contracts expiring

There are a lot of players with their contracts up in the summer who would be good signings:

To view the link you have to Register or Login

Some are unrealistic like Zlatan. But some which I think would be good are:

Steve Mandanda - Keeper
Nicolas N'Koulou - Centre Back
Martín Cáceres - Centre Back
Cheick Diabaté - Centre Forward
Daniel Agger - Centre Back
Miguel Veloso - Defensive Midfield