Glen Johnson would do a great job there, hes one of only players actually able to beat his man, he looks dangerous when he goes forward and as you say he cant defend but has all the traits to be a top winger, hes not slow, beats players, he's direct and his end product isnt normally to bad either. it seems a no brainer to me really??
and then for now we could even use kuyt (when fully fit) as another forward to help torres out.