The Blues youngster, who has made a brilliant start to the season under Frank Lampard, was hit just above his right ankle after a wild challenge from the former Arsenal midfielder.Mount had started the opening group stage clash brightly, but his evening was brought to a premature end by Coquelin's crunching tackle.
The Frenchman, who represented the Gunners between 2008 and 2010, caught Mount with his follow-through after getting a touch on the ball.
