Arsenal have been left fearing the worst after Theo Walcott was stretchered off in Saturday's 2-0 win against Tottenham Hotspur, reports the Guardian.
The England and Gunners forward is set to undergo a scan on his injured knee on Monday but early indications suggest that the 24-year-old has strained ligaments and could be out for up to four weeks.
It's a massive blow for Arsenal, who are currently without all their recognised strikers due to injury. Nicklas Bendtner and Olivier Giroud are both sidelined with ankle injuries whilst Yaya Sanogo is still recovering from a long-term back injury.
Walcott, who is not recognised as an out-and-out striker for the Gunners, was used as a central striker against Tottenham and did well until the 81st-minute tackle on Danny Rose ended his involvement.
Not only is news on Walcott's injury bad news for Arsene Wenger, but also for the player himself who was just starting to find his best form following a two month layoff with an abdominal injury.
Walcott will be keen to make Roy Hodgson's World Cup squad for this summer after missing out on the 2010 squad in controversial circumstances.
He regained his role in the first XI against Manchester City and has since scored five goals in six starts.
Arsenal also lost Mikel Arteta and Thomas Vermaelen to injury during the FA Cup third round and Wenger is waiting for results on both of them to see the extent of their injuries.
Arteta was subject to a heavy kick to the calf and was withdrawn on 75 minutes while Vermaelen was taken off at half time with suspected knee ligament damage.
Both players will be assessed today.