Here's a look at how every player to leave Bramall Lane - who either left permanently or on a loan deal - is getting on at their new club.
9. Caolan Lavery - Transfer - Walsall
Since moving to the League Two side, the 27-year-old forward has been getting plenty of first team action, and has scored four goals in 22 matches. (Photo by David Rogers/Getty Images) Photo: David Rogers
10. Samir Carruthers - Transfer - Cambridge United
He's had to wait patiently for first team opportunities since joining his new side, and has also struggled with injury problems throughout the campaign. (Photo by Stephen Pond/Getty Images) Photo: Stephen Pond
11. Jake Eastwood - Loan - Scunthorpe United
The promising stopper played a number of matches for Scunthorpe, before being recalled by the Blades in January for cover following injuries to Simon Moore and Michael Verrips. (Photo by Ashley Allen/Getty Images) Photo: Ashley Allen
12. Callum Robinson - Loan - West Brom
United's summer signing has been a hit for the Baggies since joining them on loan in January. He's scored twice and made one assist in his eight games so far. (Photo by Nathan Stirk/Getty Images) Photo: Nathan Stirk