But the 16-time world heavyweight champion is planning to get back into the ring at some point, and he acknowledged rumors about his future in an appearance on The Tonight Show with Jimmy Fallon on Wednesday.
"I'll definitely be back to the WWE, I just don't know when," he said.
Rumors have been circulating about a potential return for Cena since May, when he posted the WWE logo on Instagram. Speaking to Fallon, he said he just shared the photo because he was "feeling rather nostalgic," but he is looking forward to his eventual return.
Jon Alba of Spectrum Sports reported June 9 that Cena will be free of acting commitments in July, which would line up with SummerSlam. That event is currently scheduled for August 21 at Allegiant Stadium in Las Vegas.
If his return bout—whenever it is—were to happen, Cena would get a chance to earn his 17th world heavyweight title. Doing so would break his current tie with Ric Flair.
"I haven't had my last match, and I can't wait to have my next match," he told Fallon.