Willis, 29, said he remains open to playing Test rugby even though his decision to stay at Toulouse has kept him out of England contention.
"You cognize what you sacrifice," Willis said of his Test career. "It's thing I inactive privation to do, but rules are rules."
He noted that three years have elapsed since his last appearance for England and, under World Rugby's 'birthright' rule, he could represent a nation where he, his parents or his grandparents were born. Willis' grandfather was born in Belfast, making him eligible for Ireland in theory.
"Willis is now, successful theory, disposable for enactment by Ireland," the report states.
Ireland's traditional preference for home‑based players has been eased on uncommon occasions in the past, allowing Jonny Sexton and Tommy Bowe to continue representing the country despite their moves to Racing 92 and the Ospreys. By contrast, players such as Simon Zebo have found themselves excluded after heading overseas.
"It is highly improbable immoderate compromise would be recovered that allows Willis to play for Ireland portion remaining with Toulouse," the article adds.
When asked about his eligibility, Willis replied, "I'm a 4th Irish, but they person the aforesaid rules as England." He then urged, "You request to bash immoderate digging, that's your job, you find the mode [around the rules]!"