The actor was fired from the sitcom in 2011 after he fell out with Lorre amid a string of personal problems, but he was rumoured to be returning to the show in a cameo role when it came to an end last month (Feb15).

Sheen did not appear in the episode, and Lorre used a title card at the end of the show to explain that the actor was offered the part but had turned it down. A lookalike was hired for the finale so Sheen's character could be killed off by a falling piano.

During a chat with TMZ.com, Sheen has now struck another blow at his old enemy, saying, "That's just him (Lorre), I don't care anymore, I don't care if he lives or dies...

"It doesn't even matter, to go that low, that immature and that completely unevolved and that stupid, in my face, really? You (Lorre) must feel safe motherf**ker. You must felt safe where you live, damn! Sorry, just saying man."