United manager Neil Warnock is ruling out Paul Green out for the foreseeable future - but is optimistic skipper Lee Peltier will be fit to lead the side out at Peterborough on Saturday.

Republic of Ireland international Green sustained a knee injury during last weekend's win against Wolves and missed the midweek trip to Blackpool.

"It's looking like a grade two strain or a tear," said the boss. "We're hoping four or six weeks, but it could be eight weeks. I had the dreaded feeling with it being his knee.

"He had a good pre-season and it's a blow to us, but he's a good healer so with a bit of luck it might not be as bad.

"It's very difficult to replace him with the way he was playing, but we know what we've got and we'll get on. It gives the opportunity for someone else."

Captain Peltier was the concern after Tuesday's defeat at Blackpool when the manager revealed afterwards that he had popped his shoulder during the first half and played on through the pain barrier.

"Lee popped his shoulder on Tuesday, but he wants to play so I think he'll probably be okay," he added.

Teenage striker Dominic Poleon, who netted in the Development Squad's draw with Derby County on Wednesday at Thorp Arch, could be added to the squad. That Development Squad game also saw Adam Drury and Paddy Kisnorbo gain valuable time on the pitch.