Former Carlton senior coach and current Hawthorn assistant Brett Ratten will depart the Hawks at season's end, after six years and three flags under Alastair Clarkson.

Ratten will be on the lookout for another coaching position ahead of the 2019 season, with the Herald Sun reporting Hawthorn are set to bring in a fresh crop of coaches in favour of Ratten.

Prior to joining the Hawks as an assistant to Clarkson, Ratten controlled the Blues in 120 matches between 2007-2012, and led them to 60 wins and one draw during his time at the helm.

Ratten won a final in 2011 and helped the Blues reach the semi-finals that year, before coaching out the following season in his last year at the club.

The opening at the Hawks could see favourite son Sam Mitchell return as an assistant, after he reportedly told the Eagles he wanted to return to Victoria to continue his coaching career in 2019.

Hawthorn would certainly be keen on Mitchell's services, although given he's one of the hottest assistant coaches in the league, a number of Victorian teams will also be after his signature.