Arsenal defender Jurrien Timber has suffered an anterior cruciate ligament injury, according to multiple reports.

The Gunners have yet to confirm the news, only stating that the Dutchman will undergo “further” tests in order to diagnose the extent of the knee problem but it seems likely that he will be out for a number of months.

Timber fell awkwardly five minutes after half-time in Arsenal‘s 2-1 win over Nottingham Forest at the weekend. It’s a big setback for the player who had only just arrived from Ajax during the summer transfer window.

Gabriel Jesus has been sidelined since the start of the month after undergoing minor surgery on his own knee injury. However, it is believed that the Brazilian international will only be unavailable for a few weeks.

There is a good chance that the forward will return to action before the international break, although it remains to be seen whether he will be fit to start in any of the club’s three upcoming fixtures, considering he hasn’t played any minutes since the 5-3 friendly victory against Barcelona on July 27th.

Oleksandr Zinchenko was not in the squad for the match versus Forest, despite being pictured back in training last week. The Ukrainian international has been recovering from a muscular injury but you would expect that he will be ready to face Crystal Palace next week.

Updates on three other Arsenal players

Mohamed Elneny is still not back in contention for first-team action. The Egyptian international has been out since January due to a knee injury and his rehabilitation is taking some time.

Folarin Balogun (foot) and Albert Sambi Lokonga (muscular) have also had their own fitness issues in pre-season but they were thought to be ready to return. With the futures of the two players both in question, it may simply be the case that they were left out of the matchday squad for the Forest fixture in anticipation that they will be sold soon.