Henrikh Mkhitaryan ruled out of Arsenal's game against Southampton

Arsene Wenger fears Henrikh Mkhitaryan could be out for a number of weeks with a medial knee ligament injury.

Mkhitaryan was forced off in the 4-1 win over CKSA Moscow in the first leg of their Europa League quarter-final on Thursday.

He will have a scan on Friday to assess the extent of the damage, but Wenger confirmed the midfielder will miss Arsenal's game against Southampton on Sunday, live on Sky Sports Premier League.

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Asked if Mkhitaryan could be out for a number of weeks, Wenger told Sky Sports News: "I fear yes, I hope I'm wrong."

Goalkeeper David Ospina will be out for up to three weeks, Wenger confirmed, while Ainsley Maitland-Niles is also unavailable for Sunday's game.

Alexandre Lacazette has not started a Premier League game in over two months, but played in place of cup-tied January signing Pierre-Emerick Aubameyang in Arsenal's Europa League game this week.

Lacazette, 26, scored a brace in the victory, taking his tally to three in five days since his comeback from a knee injury.

The £50m summer signing managed just three in his first four months with the club, but Wenger is confident there is room for both Lacazette and Aubameyang in his side.

"Aubameyang I knew could play on the left," said Wenger, who would not confirm if the pair will start on Sunday.

"He played there a long time. They can play together through the middle, with Lacazette as centre-forward and Auba on the left, and with Auba up front and Lacazette behind. That's an opportunity as well."

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