if your player is not too important in your team...and you can find his replacement, then you can sell him out...
but if not....don't sell him..(like arsenal play without vieira)...
20m...not much but not less.....
He's good side-back, but not worth 20M man.........
Sell it for christ sake...........you can get 3-4 players to build up the squad after you sell him...........y not