The former King of the Jungle, who won the reality show in 2007, told The Mirror that the Coronation Street star has no chance of winning the current series.
"I wouldn't want to be there with this Helen from Coronation Street, she's an absolute nightmare," he said.
"If I was in the jungle with her, I'd have to kill her I think. I'd have to kill her and go and bury her in the jungle.
"To begin with, I had to agree with Brian Conley, she was very funny - she was amusing, she made me laugh.
"But she annoyed me so much in not doing anything, just standing there and not even attempting challenges before she said, 'I'm a Celebrity... Get Me Out of Here'.
"Then when she suddenly got the 12 stars I thought, 'Now hang on, what's going on here? Is she working this to her advantage?'
"The public will vote her out very quickly, she'll never win in a month of Sundays. It's odd. I actually put it down to her being totally stupid."