Migné was previously coach of the DR Congo national under-20 team.
[4] Migné was appointed coach of the Congo national team in March 2017.
[7][8] Under Migné Kenya was nominated for the CAF Men's national team of the year award in 2018, for the first time in history.
[10][11] On 7 November 2019, he was announced as coach of the Equatorial Guinea national team.
[12][13] He was dismissed by Marumo Gallants shortly before the club's second round 2021–22 CAF Confederation Cup game against AS Vita Club after the team had failed to win any of their first five league games, scoring only one goal, and after he had apparently directed abusive language at the club's technical director, Harris Choeu.