Saint-Etienne manager Christophe Galtier was knocked out in a freak accident on Tuesday when he slipped carrying a goal net at the end of a training session.
The 47-year-old banged his head on the goal frame, briefly losing consciousness and suffering a deep cut to his right cheek bone.
He was taken to hospital where tests detected no serious damage.
The former Marseille defender is due to return to work on Wednesday to supervise his side's next training session, a club spokesman indicated.
Galtier took command of Saint-Etienne in 2009 after spells coaching a number of sides including Marseille, Lyon and English side Portsmouth.
Last season's League Cup winners, Saint-Etienne are flying high in fourth in Ligue 1, one point off a Champions League place.