James Henry, whose season is over after picking up a knee ligament injury, and Benik Afobe, who this week returned to parent club Arsenal to receive treatment on a not-too-dissimilar problem will join Martyn Woolford (Cup-tied) on the sidelines.
However the Lions manager is hopeful Rob Hulse is fit to play after training today and tomorrow.
Blackburn will be without new signings David Jones and Cameron Stewart who are, like Woolford, Cup tied, but Kenny believes his counterpart still has a vast array of talent to choose from and for his side to look out for.
"The obvious one if the goalscorer Jordan Rhodes. He's carried on scoring there as he has done at every stage of his career so far. They have a talented squad and when you go through the names - Murphy, Bentley, Pedersen, Olsson, Henley - there's a lot of attacking threat. Michael's been working hard to make them solid and competitive."
Kenny admits it is 'tempting' to make changes following this week's League loss, but it calling on everyone associated with the club - players, staff and supporters alike - to pull together.
"It's a big week for us. If we can win on Sunday then you hope the confidence and attention generated can kick us on. Whichever way you look at it, or whatever words you want to use, it's a big game and a key one in our season."