After a successful six months on loan from Hull City, Rovers boss Gary Bowyer wasted little time in making Cairney's move to Ewood Park.
A popular member of the squad with both fans and players alike, the midfielder put pen-to-paper on a three-and-a-half year deal for an undisclosed fee.
The Scotland Under-21 international joined Hull as a 16-year-old from Leeds in 2007 and was named the club’s Young Player of the Year the following season.
He featured on 14 occasions during the Tigers’ 2009-10 top flight campaign, including 14 appearances for the Tigers last season as they were promoted to the Premier League last season.
A technically gifted player, Cairney has won six caps for his country's under-21 set-up.