Thanks to Jackie Charlton and his 'distant relative once drank a pint of Guinness' approach, Ireland had good English players in the 80s and 90s!
For instance, Lancashire born and bred Lawro, and Londoners the like of Andy Townsend and .... ahem ... cough ..... one C. Hughton esq. ...
Why would he want it? The Republic's going through a bad period in terms of having good players available, so any manager would be on a hiding to nothing. Plus he is genuinely on a long term project with us, I believe. And I'm pretty sure he would have to take a big pay cut.