Darryl Westlake says the Blades are determined to avenge last season League Cup defeat at the hands of Tuesday night's opponents Burton Albion.
United meet the Brewers in a repeat of last season's first round tie and Westlake says that penalty shoot-out defeat will act as extra motivation this time around.
He commented: "I didn't play in the game last season, but the lads that did will be really keen to banish the memories of that on Tuesday.
"Burton did well last season and got to the semi-final of the play-offs, but if we are at our best we should be very difficult to beat on this occasion."
On his own progress under new boss David Weir, Westlake added: "From day one the Gaffer wanted us to get the ball on the floor and pass.
"As the friendlies progressed he emphasised he wanted the full-backs to push on and the current formation benefits me perfectly.
"We have a lot of good technical players in the squad and we proved on Friday night that we can rack the possession up."