Saints sources have said that the club is “seriously considering” putting together a deal for Widdop, who is keen to finish his career in England after asking to be released from his NRL contract.
It is understood that Wigan,Warrington, Huddersfield and Hull FC are other potential landing spots for the 29-year old, while Leeds have ruled themselves out.
The Super League’s ‘marquee player’ allowance, which allows clubs to recruit and retain superstars outside the salary cap to bolster their rosters, makes it possible to bring Widdop back to his native land.
Widdop told reporters last week of his desire to return to England, but remains committed to the Dragons next season.
“There’s no secret I have aspirations of going over to the UK and playing.
“It’s something I’ve always wanted to do.
“I have a good relationship with the club and so when the time is right we’ll work together.”