Dundee United have signed former Queens Park Rangers defender Coll Donaldson on a three-year-deal.
The 20-year-old left Livingston in January 2014 to join QPR on a two-and-a-half-year deal for a £150,000 fee, but started only one game at Loftus Road before being released by the club.
United manager Jackie McNamara told the club website: "[Donaldson] is skilful, physical and quick and will add to the competition amongst our defenders.
"We are extremely fortunate that he was available and it was important that we got him before others were aware."
The Terrors finished fifth in the Scottish Championship last season.
