Stokes missed Celtic’s 2-0 win over St Johnstone at the weekend.
“He has a niggle,” said the manager. “It’s not like him.
“He’s been on great form for us this season, so we’re hoping he won’t be out for too long.
“It could be more than a niggle, it could be a strain, so we just have to see how he is over the next few days.”
