Rovers boss Tony Mowbray is hopeful loanee Harry Chapman can still have a big impact on the season after the attacker had surgery on his hamstring injury picked up in the 0-0 draw at Wigan Athletic at the end of October.
Chapman had been a key figure - often coming off the bench - for the team prior to the blow and Mowbray still expects the youngster to play his part come the home straight of the season.
"Harry's okay, but it's not just a normal hamstring injury; he's had to go and have an operation," the boss confirmed.
"The surgery has gone very well. He went to Finland for the treatment and he'll be on crutches for about six weeks now. Our thoughts are with him recuperating properly and recovering strongly.
"Unfortunately for Harry it's not an injury that going to put him out for four to six weeks - it's going to be a bit longer than that."
There's never a good time to pick up an injury, but Mowbray was left more frustrated at the timing of the 20-year-old's setback, with the winger really starting to get into gear at Ewood Park.
"We're disappointed for him and it's disappointing for us as he was having great impacts coming off the bench," added the boss.
"He started one or two games before he picked up the injury, so it's frustrating because he was just getting up to speed.
"We've had to put him to the back of our minds in terms of selection at the moment.
"Hopefully he can come back and help us at the end of the season get over the line."