The 23-year-old Super League Man of Steel was reported in Australia to have made contact with NRL clubs over a move Down Under in 2014.
"He's an NRL player every day of the week," Sydney Roosters recruitment manager Peter O'Sullivan told The Australian. "He's one of half a dozen players over there that you would want in the NRL. He's elite. There will be 16 clubs interested in him."
It is thought Tomkins has received offers to follow older brother Joel into rugby union, but is more likely to join England team-mates James Graham, Gareth Widdop and Sam Burgess in the NRL at some stage of his career.
However, Tomkins signed a new five-year contract with the Warriors in November 2011 which included a clause preventing him from talking to NRL or rugby union clubs for the next three years.
Wigan coach Shaun Wane began to prepare for life after Tomkins when he experimented with the full-back position during his club's pre-season trial matches, but he insists the mercurial player will be with the club at least until the end of next season.
"As far as I'm concerned he's here for this year and he's here for next year," Wane told reporters at the club's Orrell training ground. "He's contracted here and I know he's very happy. I've had a chat with him. He came to me this morning and explained that there is some rubbish stories in Australia. He was very open about it. As far as I'm concerned, it's rubbish."
Tomkins broke off from Wigan's preparations for Friday's mouth-watering clash with Warrington to present a £4,000 cheque to Joining Jack, the charity set up by former Wigan player Andy Johnson after his son Jack was diagnosed with the currently untreatable muscle wasting disease, Duchenne Muscular Dystrophy.
The donation came from sales of 2,012 limited-edition cans of Heinz BIG Soup "Beef, Tomkins & Onion" - commissioned by Heinz last October in honour of Tomkins being named 2012 Man of Steel.
"Having my face on a can of Heinz BIG Soup was not something I'd ever imagined happening and was certainly a surreal highlight of my 2012 season," Tomkins said. "Hopefully this donation can go some way to helping Jack Johnson and the great work that Joining Jack does."