Tony Mowbray has provided a further update on Harry Chapman's injury, and says the coming weeks will be a test of his squad's strength in depth.
Chapman limped off in the latter stages of Rovers' goalless draw against Wigan on Saturday, and is set for a scan today.
Blackburn will also be without suspended duo Elliott Bennett and Dominic Samuel against Fleetwood on Tuesday, following their red cards against the Latics and Portsmouth respectively.
Speaking in his pre-match press conference, Mowbray said: “We came in yesterday to check how everyone was, but generally we’re fine.
“We’ll look after them today, there will be video work on the next opponents and we’ll get them out on the grass for half an hour or so to prepare for tomorrow night.
“Chapman’s hamstring is a blow because when we’ve been looking to get positive results, he’s come off the bench and made a difference.
“We’ll have to try to find a way to get results without him over the next few weeks. He’s getting scanned today. We’ll see what the damage is and hopefully it’s not too bad.
“He’s a young boy and hasn’t had much experience of a hamstring injury in the past, so we’re mindful that we need to take our time with him.
“We don’t want to rush him back and create a deeper problem, we need to give him time to get back to full fitness.
"Let’s make sure we get him spot on before he comes back.
The boss added that the coming weeks will allow certain players an opportunity to break into the side, and called on his team to be ready for the challenge.
“I’ve said that to them, the time is coming," he added. "We’ve got a few players on four bookings, a couple of suspensions and an injury or two.
“We have to dig deep and see if the strength of the squad can come to the fore now.
“That’s the beauty of the game. Peter Whittingham is a good example, it took him time to get up to speed, he was a big signing.
“Corry and Richie were doing a good job, but he put himself back in after a little injury that Corry got and he’s done exceptionally well.
“He’s grabbed that opportunity to play every week, and that opportunity is there for others, those who haven’t played as much as they might have wanted to.
“The lads have to be ready, mentally and physically. You have to train hard every day.
“When you get asked to play an Under-23 game, you have to play it and give it your best shot, so that you’re ready for the first-team when needed.
“They’re a good group and I’ve said that continuously. They work hard with each other and the camaraderie is good. Whoever comes in is capable of doing the job.
“As the team has developed and settled we’ve generally picked a different formation, but we’re always open to trying different things and different players.
“Let’s see what the next few weeks bring and if the players who come in give me a selection headache.
“It’s about balance and we’ll keep searching for the winning formula. The test is coming, not just for us, but every team in this division."