Complex sentence: In the next two seasons, Daniel Hechter, kept him on alongside Just Fontaine, but at the start of the 1975-76 season he quit the club and Fontaine continued became the sole coach.
Split into simpler sentences: In the next two seasons, Daniel Hechter, kept him on alongside Just Fontaine. However, at the start of the 1975-76 season Vicot quit the club and Fontaine became the sole coach.