Striker Jordan Robertson has gone the other way and looks to feature for the Saints tomorrow in their encounter with Doncaster Rovers.
Dyer has joined the Blades until the 28th December and is poised to start on the bench against Watford. Nathan who is 20 years old comes up to Sheffield today and will be more than likely to be put through his first training session.
Kevin Blackwell said: "Nathan has got the ability to play wide left, he's blessed with exceptional pace, and as a young kid, when he first came on to the scene, he was spoken of the same terms as Theo Walcott.
"Our fans will love him, he will add an extra dimension and spark our play. Because he will not arrive until Friday afternoon, he will more than likely start on the bench,
"It is also a terrific opportunity for Jordan, he will get first team experience which he won't get here at the moment because at the moment he has the likes of Beattie, Sharp and Webber in front of him.
The transfer dealings don't end there. Quinton Fortune, Kiki Musampa and two Spanish players are all on trial.