Legeay was the manager of the Peugeot cycling team in its final year of existence in 1986. In 1987, he created the Vétements Z–Peugeot team as a continuation of the Peugeot cycling team, which he managed until 2008. During its existence, due to changes in sponsorship, the team was renamed Z–Peugeot (1988–89), Z–Tomasso (1990), Z (1991–92), GAN (1993–96) and Crédit Agricole (1997–2008). Legeay's team is best remembered for being the team which the American cyclist Greg LeMond rode for when he won the Tour de France in 1990.

He managed also Pascal Simon, Stephen Roche, Ronan Pensec, Cédric Vasseur, Gilbert Duclos-Lassalle, Frédéric Moncassin, Stéphane Heulot, Chris Boardman, Thor Hushovd, Stuart O'Grady.

The team disbanded at the end of the 2008 season when Crédit Agricole ended their sponsorship. He was vice-president of the French Cycling Federation too.

Legeay finished 84th in the 1980 Tour de France and during the 1976 Tour de France he finished 35th and was given the Combativity Award on two stages.

In 1974, Legeay tested positive for amphetamines at the Paris–Nice "race to the sun".^[2]

In 2007 Legeay was involved in the founding of the Mouvement pour un cyclisme crédible, an organisation of teams and others involved in cycle racing promoting more rigorous standards regarding combating doping in the peloton. He became the movement's president and continued in this role after the disbanding of the Crédit Agricole team.^[3]

• List of doping cases in cycling