Champion's lawyer Sujit Dey today said his client has asked him to discuss with the government the possibility of starting talks with the outfit.
Dey said he had a thorough discussion on this last evening with Champion who is now in the custody of the police and was kept at an undisclosed location.
The defence lawyer said Champion was looking healthy and he was provided with the facilities as per norms.
Champion, a former deputy superintendent of police who co-founded the GNLA in 2010, was arrested on July 30, hours after he was pushed back from Bangladesh.
He was in a jail in Bangladesh and had completed his prison term there before being pushed back.
The GNLA militants were fighting an armed struggle for a separate Garo Land and is active in the Garo Hills region.
GNLA was declared a terror organisation in January for killing security personnel and civilians, besides incidents of abduction and extortion.