Santi Cazorla
Santi Cazorla is a major doubt for Arsenal's clash against OlympiacosGetty

Arsenal are likely to be without the services of Santi Cazorla and Alexis Sanchez for their crucial Champions League game against Olympiacos later this month, with both players set to be assessed for long-term injuries. The Gunners lost three players in their 1-1 draw against Norwich, taking their total injury count to 10, more than any other team in England's top flight.

According to The Guardian, the Chilean could be out for over a month in case of a tear on his hamstring, while Cazorla will undergo a scan to alleviate concerns over potential ligament damage to his knees. The north London club are facing a deeper crisis after Francis Coquelin and Mikel Arteta suffered injuries in the previous game against West Bromwich Albion. However, there is some good news in the form of Laurent Koscielny, whose scans have shown that he may be back in training before their game against Sunderland.

Jack Wilshere, Danny Welbeck, Tomas Rosicky and Kieran Gibbs are the other players who are missing from the squad, with the former three having not played a single minute of the campaign thus far. All four are likely to be back in training before the New Year, with Wilshere stating in an interview that his recovery is moving faster than expected.

Wenger will be concerned by the state of his squad, days before their clash against Olympiacos, where they have to win by a margin of two goals or face relegation to the Europa League. The return of Aaron Ramsey and Alex Oxlade-Chamberlain will be a major boost for the Frenchman, as Calum Chambers is being prepared for a stint in the defensive midfield, in lieu of the injuries and lack of options thereof.

Cazorla's absence will force Wenger to use Ramsey through the middle, having previously mentioned that he prefers the Welshman in a more wider role as he adds more balance to the squad. Joel Campbell, who has impressed in a few stints he has had in the starting line-up, is likely to move back into the right, with Chamberlain taking up Sanchez's vacant spot on the left.