Defender Adam Henley will miss tomorrow night's match with Cardiff City through injury.
The full back sustained a hamstring strain during the first half of Saturday's match against Wigan Athletic and has been ruled out for the next few weeks.
Henley joins Elliott Bennett (hamstring) and Corry Evans (groin) on the absent list, whilst fellow defender Elliott Ward is closing in on a return to full fitness after his ankle injury on the opening day of the season.
"Adam Henley was injured at the weekend and will miss out for a period of three to four weeks," said boss Owen Coyle on Tuesday.
"He's tweaked his hamstring. I don't think it's as severe as Elliott Bennett's, but it is still enough for the boy to be in discomfort. He'll work with Dave Fevre and we'll see how long he will be.
"Elliott Ward has done some training with the group and we'll see if there's any reaction to that. Whilst Corry Evans has done some stuff with the medical side. Hopefully in the coming days he will step that up."
Fans who haven't yet got their tickets for the Wednesday night match against Cardiff City have until close of business today to obtain them from Ewood Park.
Some 200 tickets have been sold to Rovers fans for the midweek match. Advanced prices are £22 Adults, £18 Seniors, £13 16-21yrs and £10 for Juniors aged 15 and under.
After that supporters can buy on the night at the Cardiff City Stadium, from the away ticket office at Gate 12.
However supporters should note that there is a £2 price increase for sales on the day, meaning matchday prices are £24 Adults, £20 Seniors, £15 16-21yrs and £12 for Juniors aged 15 and under.
Supporters using the club's official away travel should note that Blues Bar will be open from 10am serving food and drinks.