Keith Earls a major doubt for Munster's European Champions Cup opener

Dave Kilcoyne could feature however

Keith Earls, Munster

Keith Earls ©INPHO/Cathal Noonan

Keith Earls is a major doubt for Munster's Champions Cup opener away to Racing Metro this Sunday.

The Irish international was unable to train today with the rest of the squad.

Munster Director of Rugby Rassie Erasmus admits that makes him a doubt for Sunday.

"Earls would be very doubtful for Sunday due to concussion. We will give him some time, but I think there is a very good chance that he won’t be available," he said at the press briefing.

However, loosehead prop Dave Kilcoyne did take part in today's workout as he follows the return-to-play protocols with a final decision on his availability set to be made tomorrow.

Prop James Cronin had a four week ban confirmed on Wednesday.