Chris Wilder has bolstered his squad further, with the permanent addition of another midfielder and the loan capture of a Premier League striker.
Welsh international Lee Evans joins the Blades on a three-and-a-half-year deal from Championship leaders Wolverhampton Wanderers, with United paying an undisclosed fee for his services.
Meanwhile, Manchester United's James Wilson will spend the remainder of the season at the Lane, after all parties agreed a loan deal.
The deals come on the back of Ryan Leonard signing for the Blades on Tuesday.
Upon seeing Evans sign on the dotted line, the Blades boss remarked: "Lee is a great age with his best years ahead of him. We've watched him and monitored his progress for a while and we're delighted to get him permanently.
"He is a young international, he fits in with what we're about and is an excellent player who we hope will add further depth and competition to our midfield."
The Newport-born midfielder started as a youngster at Bristol Rovers, before making his debut for his hometown club as a 17-year-old in March 2012. In January 2013, Evans joined Wolves and has made over 50 appearances for the Molineux club, in addition to 35 whilst on-loan at Bradford City during the 2015/16 campaign. The 23-year-old has impressed this term at Wigan Athletic, helping the Latics to the summit of League One, scoring three times in 24 appearances in all competitions.
Evans, who has won numerous Welsh caps at U21 level, made his senior debut alongside David Brooks against Panama in November.
And Wilder is equally as excited to have landed Wilson, adding: "James has a fantastic pedigree, having come through the ranks at Manchester United and, importantly, has some good Championship experience.
"He says he is raring to go and is the fittest he has ever been, so couple that with his undoubted ability and desire to impress, then I'm sure he will improve the group."
Wilson was first scouted by Manchester United at the age of seven and has since progressed through the ranks at Old Trafford. The striker made his Red Devils debut in the Premier League against Hull City as an 18-year-old, scoring twice in a 3-1 victory.
The Biddulph-born operator spent the 2015/16 campaign on-loan in the Championship with Brighton and Hove Albion and scored five times in 25 league appearances for the Seagulls. The England U21 international joined Derby on a long-term loan at the beginning of last season, but a knee injured meant he returned to Old Trafford earlier than planned.