Wright has signed an 18-month deal after the striker's contract at Aberdeen was terminated by mutual consent this week.
Meanwhile, Paris Cowan-Hall has rejoined the club from Portsmouth for the rest of the season.
The 19-year-old striker was recently signed on a one-month loan but returned to the Premier League club after contracting glandular fever.
Full-back Robbie Stockdale (hernia) and striker Adrian Forbes (leg fracture) remain the only injury absentees.
Source: Team Talk
Source: Team Talk