Boro have allegedly offered £500,000 for the 26-year-old, who is out of contract in the summer.
Aberdeen have so far been unable to convince him to sign a new deal.
Strachan Raids Scotland Again!
Boro have allegedly offered £500,000 for the 26-year-old, who is out of contract in the summer.
Aberdeen have so far been unable to convince him to sign a new deal.