Lyon president Jean-Michel Aulas says the Ligue 1 club will not allow Bruno Genesio and Gerald Baticle to join Remi Garde at Aston Villa.
Ex-Lyon boss Garde is Villa’s first choice for their managerial vacancy, but two members of his old backroom staff, Genesio and Baticle, are still working at Stade de Gerland.
Aulas told Le Progres: “Remi, I hope, will go to Aston Villa, he deserves a big English club.
“But an assistant under contract cannot leave. And anyway, a deputy cannot ask that.”
Villa are searching for their third manager in eight months after sacking Tim Sherwood on Sunday.
Sherwood paid the price for a poor start to the season in which Villa won just one of their opening 10 Premier League games.
They are bottom of the table and four points from the safety line ahead of Monday’s trip to Tottenham.
Garde, a former Arsenal midfielder, has emerged as the front-runner for the position this week, with Saint-Etienne boss Christophe Galtier also mentioned as a candidate.
The initial favourites, David Moyes and Brendan Rodgers, have drifted in the betting while there does not appear to have been significant movement concerning another potential candidate, former Leicester boss Nigel Pearson in recent days.
Former Sunderland manager Gus Poyet is now out of the reckoning having agreed to take over at AEK Athens.
Discuss this in the new-look Aston Villa Your Say forum.