Aberdeen have signed defender Shaleum Logan from Brentford after a successful loan spell at Pittodrie in the second half of 2013/14.
The 26-year-old former Manchester City player has now signed agreed a permanent deal with the Dons.
Boss Derek McInnes told the club website: "I thought he showed enough in his loan spell with us last season in terms of his qualities and we are just looking for that consistency of performance going forward.
"We're delighted he sees Aberdeen as the place to play his football and we are looking forward to working with him again."