Lyon are three points clear at the top of France's second tier, meaning Chabal would be in line for another shot at the Amlin Challenge Cup next season, but he now says he is unlikely to carry on with his career even if promotion arrives at the second attempt.
"I always thought it would be my body and my head that would guide me," Chabal told Le Dauphiné Libéré.
"My head is not going too badly, but my body suffers. I'm 36 soon, it becomes hard and rugby gets complicated, so I actually think it will be my last season."
Chabal won the Amlin Challenge Cup with Bourgoin back in 2005 and has made more than 50 appearances across the Amlin and Heineken Cup over 13 seasons.
The back row cum second row played five seasons in Europe with Bourgoin and the same number with Sale, with his most recent involvement coming with Racing Metro, with whom he played two campaigns of Heineken Cup competition and one of Amlin Challenge Cup rugby.
In total, Chabal made 34 starts and three substitute appearances in the Heineken Cup and 13 starts and three replacement showings in the Amlin Challenge Cup.
He was an English Premiership winner with Sale in 2006 and won 62 caps for his country between 2000 and 2011.