Defender Paul Quinn has rejoined Ross County on an 18-month contract after agreeing his release from Aberdeen.
Quinn, 30, is available for Sunday's Scottish League Cup semi-final against Celtic.
He was on the bench in the Dons' third-round defeat by Hibernian but did not feature.
Following spells at Motherwell, Cardiff City and Doncaster Rovers, Quinn spent a season with County before joining Aberdeen last summer.
He has made more than 360 senior appearances and was capped by Scotland's Under-21 side earlier in his career.
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