Charlie Sheen has reportedly been spotted arriving at Heathrow airport, fuelling rumours he will enter the Big Brother house.
The 45-year-old actor infamously went off the rails earlier this year after he was fired from his hit show Two And A Half Men.
He had been rumoured to be starring Five's new celebrity version of the reality show, but was not among the housemates revealed at Thursday night's launch.
But Charlie, who has been keeping a low profile recently and hasn't updated his Twitter page for several days, is apparently in the UK and could still be added to the Celebrity Big Brother line-up.
His brother, actor Emilio Estevez, has told Access Hollywood that he felt that Charlie is a "different guy", following his recent spate of bizarre behaviour.
Emilio said: "He's got his voice back. And I think he's got his focus.
"He's on a new show and he's gonna be roasted by Comedy Central - which I think is going to be hysterical.
"I think that he's really got it together and he's very excited about the crew of the show he's putting together."
Meanwhile, Irish twins Jedward are already favourites to win the show.
Bookmakers William Hill revealed odds of the quiff-haired duo being voted the Celebrity Big Brother 2011 winner stood at 11/4, while The Only Way Is Essex star Amy Childs was second favourite with odds of 7/2.
But David Hasselhoff's ex-wife Pamela Bach was lagging behind, as apparently only £13 of bets have been placed on her.
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