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 police custody at an undisclosed location.
The defence lawyer said Champion looked healthy and is being provided 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.
GNLA, a Garo Hills-based outfit, was declared a terror organisation in January for killing security personnel and civilians, besides incidents of abduction and extortion.