Stuart Nelson has become Mark McGhee’s first signing since taking over at Pittodrie.
He told the club’s official website: “I am delighted to have signed for a club of the size and stature of Aberdeen.
“My agent received a call from Mark McGhee at the end of last week and it’s great to have sorted out a contract so quickly.
“I’m already looking forward to meeting my new team-mates and can’t wait to see the club in European action this week.”
