Johann Berg Gudmundsson was replaced at half-time of Burnley’s FA Cup win over Peterborough with a hamstring problem.

The Icelandic winger was making his first start since October in the 4-2 victory but was replaced by Charlie Taylor after an opening 45 minutes in which he caught the eye playing off the left.

Gudmundsson played the second half against Aston Villa on New Year’s Day as he continued his return from injury but there are now fears he has broken down again having had a stop-start campaign.

"We're waiting on news on Johann, we think it's a hamstring so we'll have to wait and see with that,” said Clarets boss Sean Dyche.

"He's had to come off, he said he had to come off.

"We're waiting to find out the detail. It's been an awkward one for him, he got a half in the other day, so that's a good build up, part of his progression to true fitness, so we thought today, if things went well, we'd have the lion's share of the game, which we did, and your wide players can work in a different way offensively.

"We're disappointed in that one, but it's still early to tell, we'll wait on news as it calms down.

"We have and we haven't (got strength in depth wide), we've had to use Jeff there, and we had a spell with six injuries and were getting people back, and we'll find out more news on Barnesy and Johann.

"But that is the challenge of having a pretty small squad in the Premier League.”

Chris Wood was also replaced with a hamstring issue midway through the second half with Aaron Lennon complaining of a tight groin and Ashley Barnes not involved at all having battled a groin problem in recent weeks.

“Azza had a tight groin but I thought he was excellent. I think he's okay, we'll monitor that one,” said Dyche.

"Woody was a precaution, a tight hamstring, but we're hopeful on that, we think that will be okay. Everybody else has come through unscathed. We're waiting for news on Barnesy, which we'll get this week.

"We were just getting people fit, and now we've got injuries again, and it tests you, but it was important to get the players out there and get them sharp.”