The former Italy striker joined the club in January on a six-month deal after his contract at Nice was cancelled, and scored eight goals in 12 games.
But Balotelli appeared to hint on Instagram that, despite the team coming up short, he could potentially stick around at the Stade Velodrome.
“Thank you everybody for these amazing five months even if we didn’t achieve our objectives,” the striker wrote.
“I really wanna [sic] say thank to the coach and staff, players, president and directors. Everyone that works with OM [Olympique Marseille] supporters – THANK YOU AND HOPEFULLY see you soon or good luck for everything in the future years.”
The 28-year-old has resurrected his ailing career in France since joining Nice in 2016.
@olympiquedemarseille thank you everybody for these amazing 5 months even if we didn’t achieve our objectives I really wanna say thank to the coach and staff.. players.. president and directors.. everyone that works with Om.. supporters.. THANK YOU AND HOPEFULLY.. see you soon or good luck for everything in the furlture years and #allezlom⚽️🔵⚪️
He scored 17 goals in 28 games in his first season as Nice mounted a surprise title challenge, leading the table for much of the season before finishing third and qualifying for the Champions League qualifying rounds.
He continued to impress the following season, but the team’s fortunes didn’t sustain and they tumbled down the league to finish eighth.
His contract was cancelled in January 2019 having failed to score for the club this season, freeing him up to join Marseille.
He won a domestic and European treble at San Siro under Jose Mourinho in 2010, paving the way for a move to the Etihad where he won the 2012 Premier League.
He left the club to join Milan in 2013 having fallen out with boss Roberto Mancini.