David Weir has made his first moves in the transfer market as the Blades have completed deals for a quartet of new talent.
United have secured the services of Febian Brandy, Stephen McGinn, Sean McGinty and Jasper Johns as Weir begins to shape his squad for the forthcoming League One campaign.
Brandy, a 24-year-old striker who started his career at Manchester United, joins the Blades on a two-year contract after playing last season for Walsall.
He scored seven goals last season, played in the April encounter against the Blades and can operate in a number of attacking positions.
Versatile Scotsman McGinn, 24, is a former Scotland U21s international and has represented both St Mirren and Watford - he was credited with a goal against the Blades last season when he was on loan at Shrewsbury Town.
Versatile defender McGinty, 19, who played against United whilst on-loan at Tranmere Rovers last season, signs following his release by Manchester United earlier this summer - he was part of the FA Youth Cup winning side at Old Trafford, beating the Blades in the final.
Johns, formerly of Everton completes the quartet. The 18-year-old midfielder, who can also operate at left-back, will work, in the first instance, within United's development squad.
Commenting on his new arrivals, Weir outlined what the additions will add to his playing squad.
The Gaffer remarked: "We are delighted that deals for all four of the lads have been completed in time for them to start pre-season training with the rest of the squad and we are confident that we can develop their talents, individually and collectively, for the benefit of Sheffield United."
Like Brandy, McGinn and McGinty have agreed two-year contracts, whilst Johns signs on for a year. The Blades also retain the option to extend all four for a further year.