Arsenal winger Henrikh Mkhitaryan is set to miss Sunday's Premier League game against Southampton after suffering a knee injury.
"He has a knee problem," manager Arsene Wenger said Thursday, according to Goal.com's Chris Wheatley. "We don't know how bad it is but he'll certainly be out for Sunday."
Mkhitaryan suffered the knock during Thursday's 4-1 Europa League win overCSKA Moscow.
The Gunners will be pained to lose their midfield maestro, who moved to the Emirates Stadium in January as former Arsenal star Alexis Sanchez went to United in a straight swap.