Arsenal fear £40m new boy Jurrien Timber could be out for MONTHS with serious knee injury sustained in Gunners’ opening Premier League win against Nottingham Forest

Arsenal fear Jurrien Timber suffered a serious knee injury in Saturday’s win over Nottingham Forest in the summer.

Timber immediately made his league debut against Forest in the opening weekend of the season after coming from Ajax earlier in the summer.

But the versatile defender was substituted early in the second half with a suspected knee problem.

Wood has undergone several tests and scans as Arsenal medics look at the extent of the damage.

But Mail Sport understands there are serious concerns that Timber may have suffered a significant knee injury that will sideline him for months rather than weeks.

But the 22-year-old was forced out in the second half after a knee injury

The injury appears to be worse than first thought, and Timber could now be sidelined for months

There were initial concerns on Saturday that Timber may have damaged his anterior ligament, but those fears are unconfirmed.

Any news of a long layoff will come as a huge blow to Mikel Arteta, who is impressed with how Timber has adapted to life in England.