Danny Wilson has acknowledged the opinions of many onlookers that his team has missed suspended skipper Michael Doyle during the last three matches.
The Dubliner was forced to take a watching brief following his disputed dismissal at Scunthorpe United earlier this month and despite praising the player who filled the void with great effort and determination, Wilson says Doyle's importance to the make-up of the team cannot be ignored.
The Blades boss also indicated the skipper will soon be back in the starting XI alongside the influential Kevin McDonald in the heart of the midfield.
He said: "David McAllister hasn't let anyone down and he is now someone we can rely on after his performances to date, but Michael is such a tenacious character and a leader of men.
"Everything we have said about him since I arrived at this football club has been positive and we do miss him when he isn't in the team. People would be foolish to neglect his contribution and he has made a great impact on his team-mates during his time at the club.
"We need leaders and him, along with Neill Collins, get the respect of everyone and don't hold back if people aren't cutting the mustard, which is fantastic for me as manager."
"Michael and Kevin has been a fantastic pairing over the last year or so and their understanding of each other's game is there to be seen.
"So at some point in the near future it would be remiss not to pair them together again, but let's see what happens at the weekend."