Adam Armstrong missed Rovers’ win at Millwall with a hamstring injury but Tony Mowbray isn't expecting an extended lay-off for the 20-goal top scorer.

It was just a second game that Armstrong has missed this season, with Mowbray having revealed the injury concern following the midweek defeat at Reading.

The 24-year-old has since undergone a scan, and Mowbray says Armstrong will likely dictate the time he requires to feel ready enough to be involved once again.

Rovers are back in action on Tuesday when they host Swansea City at Ewood Park (6pm), but the attacking options were boosted by the sooner than expected return of Sam Gallagher.

The attacker missed just two weeks of action with a bruised long sustained when falling awkwardly in the defeat at Nottingham Forest, with Tyrhys Dolan unused in an unfamiliar central striking role in the place of Armstrong.

“We will wait and see how long Adam is going to be out for,” Mowbray said.

“Adam will dictate I think more to the medical department. He’s a very strong-willed young man and will say when he’s ready.

“I don’t think it will be a long time he’s out for, he’s hungry for goals and I believe he’ll be back pretty soon.”

Joe Rankin-Costello made his first start since November 22 because of a hamstring injury, but was replaced by Ryan Nyambe just after the hour mark after going down with what Mowbray confirmed was cramp.

Bradley Johnson had missed eight matches with his hamstring injury before being back on the bench at Millwall and coming on in the second half.

Not involved at The Den was Amari’i Bell, that down to selection rather than injury, or Jarrad Branthwaite.

The Everton loanee wasn’t involved because of illness, though Mowbray confirmed that it wasn’t because of coronavirus concerns.

“Jarrad has got a non-Covid illess, I don’t know if it’s tonsillitis but he’s been in bed ill the last couple of days,” the manager said.

“He’s been tested, there’s no Covid issues, but he’s ill and didn’t travel.”