Writing in his column for The Star, the two-time title-winner said Arsenal never looked like scoring in their 2-0 defeat to Jose Mourinho’s side, and will likely struggle without Ozil against Burnley on Sunday.
“Arsenal could still be playing Tottenham NOW and they wouldn’t have scored a goal,” Merson wrote.
“What can they do in January to fix it? Go and knock on Mesut Ozil’s door, say you’re sorry and you need him to play!
“I’m not saying play him against Manchester City or Liverpool, when you’re not going to see much of the ball.
“But against teams like Spurs or Burnley, he can get on the ball and dictate things and make a few decent chances.”
Merson added: “They could re-register him in January. They’re missing a trick if they don’t.”