Wayward former Canberra rugby league star Todd Carney has admitted to having a problem with alcohol and says his deal in England is up in the air because his work visa has yet to be approved.

Carney, who was doing community work in Rwanda, told News Limited newspapers he was still anxiously waiting for the British High Commission to grant the visa so he could play for Huddersfield.

But with yet another incident hanging over his head - the 22-year-old is being investigated by police over the smashing of a shop window in the southern NSW town of Goulburn last weekend - there is some doubt about his future in England.

In August, Carney had his $1.6 million, four-year deal with the Raiders torn up after he was ejected from a Goulburn club.

He was deregistered from the NRL until 2010 after a string of alcohol-fuelled misdemeanours.

"I've just been stupid. I've been an idiot and I've got to change," he admitted.

"I'm no alcoholic but I do have a problem with alcohol and when I get drunk.

"When I drink a fair bit, it seems to hit me all at once.

"I just sort of black out.

"There's been plenty of morning I've woken up and not had a clue what happened the night before."

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