QPR boss Neil Warnock is delighted with their defensive signings.
He said: "I don't see a better right-back than Luke Young in the England squad but I'm biased probably.
"I think Ferdinand has got every attribute if he can listen and doesn't know it all, and listens to one or two things about the defensive side of the game.
"I don't see many better left-backs than Traore if he learns one or two defensive situations. They're all promising players to deal with."