Three Arsenal players suffered injuries during Sunday’s 1-1 draw at Norwich City – Laurent Koscielny, Alexis Sanchez and Santi Cazorla.
Of the trio, Cazorla appears to have come off worst.
According to The Guardian, Cazorla damaged the ligaments in his knee.
Ligament injuries can keep players out for months, rather than days.
Arsenal will surely miss Cazorla. The 30-year-old is one of only three Gunners stars to start all 14 Premier League games this season – the other two are goalkeeper Petr Cech and left-back Nacho Montreal.
The Gunners are fourth in the Premier League table after their recent draw at Norwich.
Arsene Wenger’s men are just two points behind leaders Manchester City, but they have some very winnable games left to play in 2015.
After Saturday’s home game against Sunderland, the Gunners also welcome Man City and Bournemouth to the Emirates, while their remaining domestic away matches this year are against Aston Villa and Southampton.
Crucially, Cazorla will definitely miss his side’s final Group F game in this season’s Champions League. Arsenal travel to Olympiakos next week, needing to beat to Greek side 2-0 or