Owen completed a surprise switch to Old Trafford last night just two days after he became a free agent when his contract at Newcastle expired.

Injuries have ruined recent seasons for Owen and the England striker made just 71 league appearances for the Magpies since his move from Real Madrid in 2005.

However, Rush believes the move gives Owen an opportunity to return to form in front of goal after scoring just 30 times in all competitions in the North-East.

Rush told Sky Sports News: "It's a chance for Michael to get back and score some goals. He'll get chances for Manchester United and will score goals."

The Wales forward has no doubts Owen can prove his class with the Premier League champions.

He added: "People have knocked Michael Owen all his career but he comes back bigger and better.

"People said he was finished years ago but he's a fantastic player who comes back stronger and better.

"It (the talk) won't worry him, I know the way he is and he doesn't have to prove anything anyway."

Alex will get the best out of him."