By Naim Beneddra
The 27-year-old Brazilian has featured as a key man for les Gones over the last two seasons, but is being touted for a departure from the Stade Gerland when the transfer window opens in June.
Despite recent comments from Bastos and Lyon president Jean-Michel Aulas, agent Emmanuel De Kerchove says future plans will not be discussed until the current campaign comes to an end.
He said the focus was on finishing strongly as the club chases a Champions League place.
"By mutual agreement with Michael it was decided not to discuss his future before May 29. He must concentrate on his work at Lyon until the end of the season, and there will be no announcement from us."
Les Gones are away to Brest tonight in their first of three games remaining in the league.