England midfielder Owen Hargreaves could be forced to sit out Manchester United's entire four-match Far East tour.

Hargreaves has been suffering from tendinitis in his knee, and will miss United's pre-season games as a precaution.

Having already missed the draw with Urawa Red Diamonds in Tokyo earlier this week, he will also sit out Friday's clash with K-League outfit FC Seoul.

While most of his team-mates, including Nani and Chris Eagles, were able to take part in training at Seoul's rain-drenched World Cup Stadium on Thursday morning, Hargreaves was restricted to only light jogging.

And Ferguson is now mulling over whether to keep his £18million summer signing on the sidelines until United return to England on July 28.

"Once we get home, we have half a dozen games to play before the season starts," said Ferguson.

"Ideally, I would like everyone on tour to have got at least two games under their belt by the time we get back.

"With the ones who are injured (Hargreaves, Darron Gibson and Lee Martin) we have to make an assessment about how they are progressing and they may have to wait until we get home."

Meanwhile, Hargreaves is confident Carlos Tevez will find playing for United is worth the wait.

Tevez has embarked on a short holiday while the wrangle over his proposed big-money move to Old Trafford is sorted out.

With FIFA due to settle the matter of Tevez's registration at some point over the next month, the Argentina striker is going to require a bit of patience before his career takes off again.

Yet Tevez is unlikely to endure the length of frustration Hargreaves had to suffer before sealing his own transfer to United.

With Bayern Munich playing hard ball, it was almost 12 months from Sir Alex Ferguson making his initial approach that the 26-year-old finally completed his £18million Premier League switch.

"Every player would love the opportunity to come and play for Manchester United and I am sure Carlos is exactly the same," said Hargreaves.

"Sometimes, these things are difficult. We are all aware Carlos Tevez is a fantastic player who is obviously wanted by the club but it is tough to say what the situation is at the moment.

"However, once it is sorted out, I am sure he will be eager to come here. Once Manchester United are interested in you, it is very difficult to say no."