The Blades have allowed Chris Porter to join Shrewsbury Town on loan.
The 29-year-old striker has agreed a month's loan with the Shrews and is expected to go straight into Graham Turner's plans for their televised Friday night clash with league leaders Tranmere Rovers.
He has scored twice in United's colours this season and watched the victory over Shrewsbury at the Greenhous Meadow on Saturday.
Boss Danny Wilson commented: "It is important for Chris to get games and, hopefully, goals under his belt. If he does well and comes back to us for the run-in full of confidence it can only be of benefit and in the meantime he will be in a Shrewsbury team that faces a number of our rivals."