Former Bristol City defender Mark Wilson has returned to Dundee United on a short-term deal.
The 29-year-old, who has agreed a contract until the end of January, previously made 138 appearances for the Scottish outfit before departing to join Celtic in 2006.
"He will enhance our squad and his versatility is important," manager Jackie McNamara told the club's official website. "Mark brings experience and ability to the squad. The short term deal will give him an opportunity to show there are no fitness concerns.
"He is comfortable at right back and left back and also gives the option of playing in front of the back four.
"He is the type of player who will help us get control of the ball and settle us down when required and I am delighted he has signed."
Wilson had been a free agent after leaving City at the end of last season.