Redknapp has admitted there is no cash in the kitty to sign reinforcements during the January transfer window.
"I'm sure he could still play in the Premier League," Redknapp told BBC Radio Five Live's Sportsweek programme.
"He is a top player and a fantastic person.
"We had him at Tottenham training and he was amazing around the place, absolute class.
"I haven't discussed it with the chairman (Tony Fernandes) at the moment so we'd have to look at that but David could still certainly be a great asset to anybody, showing people how to train, how to look after yourself.
"His professionalism is second to none."