Blackburn Rovers expect injured full-backs Amari'i Bell and Derrick Williams to be absent for the remainder of the Championship season.
Bell, 26, has a thigh problem, while Williams, 27, is sidelined with a calf issue and neither has featured since the re-start of the season.
Rovers only have four matches remaining in the 2019-20 campaign.
"I think it's going to be tough for any of our injured defenders to play a part," boss Tony Mowbray said.
""We've been trying to find solutions to a lot of problems over the last few weeks, whether that's been midfield players missing, and missing both of our senior left-backs for three or four weeks now.
"We have to keep going, find the answers and see if we can get the best solutions.
" Blackburn are 10th in the Championship, five points outside the play-off places, and are next in action at home to second-placed West Brom on Saturday.