Manager Chris Wilder confirmed his squad has a clean bill of health going into the play-off semi-final second leg against Bristol City.
Wilder opted not to include Ben Brereton Diaz and Femi Seriki on Thursday but confirmed both will be available and in the squad for the second leg at Bramall Lane.
Wilder revealed: "We made a decision on Femi and Ben Brereton Diaz on Thursday night and we're delighted to say that both of them will be involved on Monday night, so credit to the sports science department, conditioners and the people who work away from the lights who don't get any recognition - the physios, doctors - to give me that opportunity of picking from a full team with a clean bill of health."
Wilder praised his overall squad for their contributions throughout the season, but especially of late, explaining those who haven't made his XI have responded in the right manner as they look to get behind those who have been given the nod.
He added: "We've got that feel about us that we're all together and they are all pushing to try and get into the team. They respect that when they aren't in the team, they have a part to play. I think Callum O'Hare has been outstanding over the last two or three games, he's really pushing. Kieffer has come back into the team, Rob Holding has played a part, Tom Davies got onto the pitch on Thursday and made an outstanding contribution, Sam McCallum has come in, Harrison Burrows has come back and played, Femi has pushed, Alfie has had minutes, Brooksy has played a part. They are all contributing, and respect the decisions we make, more so out of respect to the players who are their team-mates as well."