Darragh Lenihan is set for an extended period on the sidelines after suffering a medial knee ligament injury.

Bradley Dack, Danny Graham and Corry Evans were also injured in the 5-2 defeat at Brentford, but could feature in this weekend’s game with Bristol City at Ewood Park.

The trio all had to be replaced by the hour mark at Griffin Park, while Lenihan limped off in the closing stages of a disappointing afternoon.

“Darragh has damaged his medial knee ligament,” boss Tony Mowbray explained.

“I would suggest that we’re going to miss Darragh for a good few weeks, depending on how the individual he recovers and how quickly he has the confidence to get back on the grass and see how it feels.

“Medial knee ligaments can be anything from four weeks to eight weeks, but if you’re lucky two to three weeks.

“Let’s wait and see.

“What we do know is that he’s not going to be available this weekend, but Mulgrew is on the cusp and hopefully the skipper will be back and alleviate any major issues in that position.”

Mowbray also hopes that attacking duo Graham and Dack, plus midfielder Evans, could be able to keep their places for the visit of the in-form Robins.

He added: “At the moment, I think they will all be okay. It was the first day back for Danny and Bradley, and as long as they train and there’s no reaction, then they should be good to go.

“Corry at the weekend was just a culmination (of knocks). Both of his legs were cut and bruised up and down, he caught a few really bad challenges.

“He’s back out there training, so I would hope all three would be back in contention for the weekend.”