Keown wrote in the Daily Mail: "When Thierry Henry was in the zone, he was driven, there was a real fierce determination about him.
"You could see it in his eyes. And I think that is coming into Theo Walcott's make-up now.
"At the moment, the reason for this is that he wants to prove he deserves to stay at the club. But when that is taken care of, he needs to carry on producing.
"Walcott needs to want it for wanting's sake. He needs to stay in this same thought process because it is bringing the best out of him at the moment."