Rovers have been dealt a blow with the news that Harry Chapman is set to undergo surgery on the hamstring injury he picked up at Wigan last weekend.
Speaking after Rovers' 3-1 victory over Barnet in the FA Cup, manager Tony Mowbray confirmed that the injury is worse than first feared.
The young winger, who is on a season-long loan from Middlesbrough, is expected to be out of action for several months, with his rehabilitation being shared between Rovers and his parent club.
"It's not good news," said the Rovers boss.
"He's got quite a severe hamstring injury and he's going to be out for a minimum of two or three months.
"It's a shame for the boy and a shame for us, because he was just starting to come to the party, having dipped him in and dipped him in.
"We gave him a start (against Portsmouth) and we got a 3-0 victory with Chapman in the team, so for it to happen is a blow for us because of the type of player he is and the individuality he brings.
"Our main concern is for Harry, because he's a young boy and he can do without having a severe hamstring injury.
"Having spoken to the head of medical at Middlesbrough and our medical department here, he'll be given every care and time to get himself back fit and hopefully back here to help us over the line towards the end of the season."