Jean-Michel Aulas has threatened to quit as Lyon president if building work on the club's proposed new stadium does not begin in 2010.
Administrative reasons and complaints by local residents have delayed the start of work on the new 60,000-capacity arena which will be located in the Decines-Charpieu region of the city.
Aulas had originally planned for the stadium to be opened in 2010 but it looks now like building work will only begin that year.
If it does not, Aulas is threatening to leave the club of which he became president in 1987.
"If work on the Montoud site does not start in 2010, I will quit the presidency of the club and I will go elsewhere," he said.
"If, for political reasons, I must take my project elsewhere, I will do it."
Lyon were in the second tier when Aulas joined but he has turned around the team's fortunes, and they are now the richest club in France.
They have dominated Ligue 1 since the 2001-02 season, winning seven successive championships.