According to Jason La Confora (take it for what it’s worth), Belichick is supposedly interested in coaching the Bears. Personally, I’d take a pass, but it’s a very oddly specific rumor. The only way I’d even entertain the possibility is if McDaniels came back as his OC and he didn’t insist on personnel responsibilities.
Personally, I want an offensive minded head coach from the Shanahan tree. I won’t be impressed by a defensive hire, barring something crazy happening like Buffalo cutting McDermott loose. Hiring a defensive guy in his 70s just doesn’t make sense.
He will retire a Patriot, if he had any desire to leave he’d have done that already.
And even if he could come to Chicago, I wouldn’t want him in the slightest. Dude is becoming more and more exposed the longer he goes without Tom Brady. Anybody that hires Bill O’Brien to be an OC (who quite literally destroyed the Texans as a franchise for years) is not a HC I’d want on a modern NFL team.