Manchester United goalkeeper Tom Heaton has broken down while on-loan at Cardiff City.

He has been ruled out for four to six weeks with a torn thigh muscle.

Heaton, 22, picked up the injury in his first game since November, Monday's 4-0 FA Cup fourth round replay to Arsenal.

Despite the defeat, he picked up the man-of-the-match award and was hoping to keep the number one shirt for Sunday's trip to promotion rivals Wolves.

"I'm absolutely gutted," Heaton told the South Wales Echo. "I've had to wait for my chance and now this happens."