Chris Wilder has added a striker to his Blades squad.
Northern Ireland international Conor Washington has signed a one-year deal with the Blades after his QPR contract was terminated.
The 26-year-old, who lists Newport County and Peterborough United as his former clubs, has played 17 times for Northern Ireland and is in their latest squad to face Bosnia and Israel next month.
He was prolific in his time with Peterborough, prompting QPR to pay a multi-million pound fee for him in January 2016.
Blades chief Chris Wilder commented: "It is common knowledge that we have been searching for a striker and a lot of names have been bandied around the media. Conor ticks a lot of boxes in what we are looking for at the top of the pitch, he's got pace, power and works hard, a good fit for us."
Washington is United's seventh signing of the summer, following Dean Henderson, Ben Woodburn, John Egan, Ollie Norwood, David McGoldrick and Kean Bryan into Bramall Lane.