Depor meet Atletico on Sunday.
On Costa, Seedorf enthused: "He's a warrior. I like him a lot, he does the work of two men. He always fights, he's a bastard on the pitch in a good way, he scores goals… the best thing is to handcuff him and leave him in the dressing room.
"But seriously, he's got himself in to form and he's going to give us problems, but if we do a good job and pay attention he can be stopped."