He is a proven goalscorer who holds the record for competitive goals in an England shirt. At 29, he should just be hitting his peak and, best of all, he arrived on a free. Yet news of Michael Owen's shock move to Manchester United was not met with widespread approval.

Indeed, despite his many achievements, he is viewed as a player with plenty to prove. Owen signs on at Old Trafford on the back of an injury-ravaged spell at Newcastle United that cost that him his place in the England set-up and ended with him - without a goal since January - warming the bench as the Magpies succumbed to relegation. There were even rumours, fiercely denied, that the former Liverpool player would quit the game altogether as critics queued up to portray him as a striker firmly in decline.

As it is, he has made a potentially career-reviving move to the reigning Premier League champions, UEFA Champions League finalists and, arguably, the biggest club in the world. Sir Alex Ferguson, a long-term admirer who first tried to sign Owen when he was just 12, believes the pressure of pulling on the Red Devils shirt will inspire the 29-year-old to recapture his old form.

Describing Owen as "world-class", the United manager said: "Coming to Manchester United with the expectations that we have is something that he will relish." Others, however, remain convinced that injuries have robbed Owen of the pace that underpinned his sensational early successes.

But what do you think? Is Owen up to the challenge of spearheading United's title defence? Are his best days now behind him or has Ferguson pulled off his greatest transfer masterstroke yet? Just click 'Add your comment' to share your opinions with fans from all over the world, remembering to keep your posts clean, respectful, on-topic and in English.