Rennes have been found guilty of poaching a youth player from a rival French club.

The Ligue 1 side want a transfer ban to be imposed on Manchester City after the Under-16 international Jeremy Helan was lured to England. However they now face a fine themselves from France's Ligue de Football Professional (LFP) after Tongo Hamed Doumbia joined them from Châteauroux in June.

Châteauroux's administrative director, Bruno Allegre, accused Rennes of double standards.

"There are certain people who hand out lessons in morality to others but do not practice what they preach," he told The Independent. "Rennes like to think of themselves as an exemplary club, a moral leader which lectures others but, at the moment, they are not capable of sticking to those lessons. Either that or they are completely incapable of training young players because they seem to have to take them from other clubs."