Cause of death: cancer
Henri Louis Michel (28 October 1947 – 24 April 2018) was a French football player and coach. He played as a midfielder for Nantes and the France national team, and later went on to coach various clubs and national teams all over the world. He coached France at the 1986 World Cup, where they reached the semi-final, eventually managing a third–place finish; he also helped the Olympic squad win a gold medal in the 1984 edition of the tournament.
Source : Wikipedia