MICHAEL Duff is a major doubt for Burnley’s trip to Bolton Wanderers on Saturday because of a calf injury.

Duff limped off during the Clarets’ 2-2 draw at Peterborough at the weekend and boss Sean Dyche revealed this afternoon that the defender could miss the trip to the Reebok Stadium.

“Duffo is unlikely, we think it’s a bit of a calf strain,” said the Burnley boss.

“It’s settling down well but we think it’s unlikely, we’ve just got to wait until we can have a closer look.”