Digital Spy reports that John has already filmed his final scenes as Karl and is expected to bow out of Corrie in September on screen. He's now joined the cast of Holby City.
John said: "It's quite short and intense - a month of Karl ducking and diving, trying not to get caught. think the writers have got his exit just right. He doesn't die, which is good. You never know, in a couple of years he might come back. I don't believe in closing any doors."
The main problem for Karl will come in the form of Craig Tinker (Colson Smith), who knows more about the pub blaze than anyone thought.
John explained: "Karl was starting to think he'd got away with it, until Craig comes up with this annoying fact which plunges him straight back into the jungle of madness. He feels he can control this kid, at least for a period of time.
"Karl will do anything to get his prize, which is Stella, so Craig had better watch out. I know I've always said that Karl is no killer, but he's starting to go slightly mad now."
Well, even if he doesn't get killed off, we know Karl is definitely leaving. I just hope he takes St Ella with him.
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