Anton Ferdinand has become the latest signing for Roy Keane's Sunderland in an £8million deal from West Ham.
Keane is delighted with capturing the 23 year old.
"Anton's a good athlete, at a good age and there could be an international future for him, very much so," he said in The Sun.
"Our coaches can take him to another level and there's no reason why he can't be a top, top player."
Keane admitted he was still in the market for players.
"I've got one more player in mind and I'm confident of getting that sorted," he added. "It's a good sign we're attracting this calibre of player as we wouldn't have been able to do that last season.
"To people outside we're becoming a better attraction."