The Iron have loaned defender Murray Wallace from Championship side Huddersfield Town.
The 22-year-old, who previously worked with current Scunthorpe boss Mark Robins at the West Yorkshire club, will stay in North Lincolnshire until September 26.
He has made 58 appearances in all competitions for Huddersfield since moving from Falkirk in the summer of 2012 – a move which was agreed in the January transfer window, but he remained in Scotland on loan.
He has made just one appearance this season, scoring the consolation goal in the 2-1 Capital One Cup loss to Notts County.
Terriers boss Chris Powell said: “Murray can count himself a little unlucky to have found himself out of our side after a good pre-season.
“I could be selfish and keep Murray in the building but at his age and stage of his development, I believe it is the best thing for Murray and the Club if he goes out and plays regular football at a good level. Equally, we have good cover at centre back at the moment thanks to the summer arrival of Martin Cranie.
“This move to Scunthorpe United is an ideal opportunity for Murray to go out and further his experience. I believe experience and know-how is vitally important for centre backs and I hope he goes to Scunthorpe and plays regularly under a Manager who knows him well in Mark Robins.”