"I was wanting to be a part of the final episode," Sheen admitted. "I was just waiting for them."
Sheen infamously exited from the hit CBS sitcom in March 2011 after criticizing executive producer Chuck Lorre. When the show returned that fall, his character, Charlie Harper, had been killed off and Ashton Kutcher had joined the Men cast.
Kutcher also addressed speculation over Sheen's return on The Ellen DeGeneres Show earlier this month.
"If you're working on the Warner Bros. lot and hear sirens, come save me," Kutcher joked.
According to Sheen, no official decision has been made.
"I've heard not the best news but whatever. Things in this business change overnight," said the actor, who will have no hard feelings if he's left out of the final episode. "What I left behind there I'm very proud of. What they did after I left -- that's on them. Whatever happens, happens."
Almost immediately after leaving Men, Sheen jumped into production on FX's Anger Management, which is approaching its 100th episode.
In the milestone episode, Sheen reunites with his Major League co-star Corbin Bernsen.
"For all the crap that's ever been said, I've never seen anybody who as generous, kind, and truly caring about crew and family around a show," said Bernsen. "And I know that to be true. I remember that from Major League and I saw it evidenced here today."
Two and a Half Men airs its series finale Feb. 19 at 9 p.m. ET/PT on CBS. The 100th and final episode of Anger Management airs Monday at 10 p.m. ET/PT on FX.