Nigel Clough expects Saturday's trip to Gillingham to be one of United's 'toughest' away fixtures of the season.
The Blades boss also hopes the Gills delay naming a manager until after the Blades have visited Kent at the weekend.
But regardless of that, Clough knows exactly what type of challenge will be waiting for his side, from a Gillingham outfit that are currently under the guidance of a host of caretaker managers.
He remarked: "The Priestfield is one of the toughest places to go to in this division, hence why Gillingham are very strong at home.
"We played well down there last season, Conor Coady scored the winner, but it will be even tougher at this stage of the season this time around.
"We need that mental toughness from now until the end of the season, we need to believe we aren't going to lose games and that in itself breeds confidence."
The Gaffer added: "We are hoping Gillingham don't appoint a new boss before Saturday afternoon because if they do, it will give the whole club a lift, most of all the players who will be out to impress.
"A manager ultimately has to make the final, but you discuss everything with your coaching staff before coming to a conclusion, everyone here has an input and most of the team we agree, I am sure at Gillingham, despite them having four caretaker managers there is just one main voice."