Joe Royle has been appointed Oldham manager until the end of the season.
The 59-year-old is already arguably the most successful manager in the club's history having first taken over back in 1982 before guiding the Latics to a League Cup final, two FA Cup semi-finals and the top flight during 12 successful years at the helm.
He later went on to manage Everton, Manchester City and Ipswich but has been out of the game for three years.
His appointment comes just hours after the Latics parted company with John Sheridan following a week of controversy at Boundary Park.
The Lancashire outfit were hammered 6-2 by promotion hopefuls MK Dons on Saturday, bringing a disappointing end to a week which included a number of alleged incidents following a team night out at Belle Vue dog track.
Despite lying eighth in League One, just a point away from sixth-placed Tranmere, Oldham are three games without a win and will now be looking to pick up enough points to make the play-offs from their remaining nine games of the season.
Royle will start with immediate effect and take charge of his first Oldham game since 1994 when Tranmere are the visiting side next Saturday.