"My lawyer terminated the contract with the UFC," St-Pierre said.
St-Pierre (25-2) won 19 of his 21 fights inside the Octagon, including the welterweight title that he vacated upon retiring in 2013. Tyron Woodley is the current UFC champion.
During the interview, GSP stated that he asked for his contract to be terminated after not being given a fight. Rumors of a bout with Anderson Silva at UFC 206 were recently squashed by UFC president Dana White.
"Lorenzo's (Fertitta) offer was off the table (after the UFC was sold to new owners)," St-Pierre said. "It was like a shock for us because we felt we were making progress."
- According to a report by MMAFighting, Conor McGregor was fined $75,000 and not $150,000 for his role in the "bottle-gate" incident before UFC 202 earlier this year. Nevada Athletic Commission executive director Bob Bennett clarified the fine.
"It appears the media and others got it wrong," Bennett said.
McGregor, the reigning UFC featherweight champion, did agree to 50 hours of community service for the incident. He is slated to face Eddie Alvarez for the lightweight title next month at UFC 205.