Mike Sielski: Bill Belichick is moving on to UNC. Funny, Nick Sirianni is likely to outlast him with the Eagles.

PHILADELPHIA Nick Sirianni's job is more secure than Bill Belichick's.

Could you have imagined suggesting such a thing 11 months ago? But it's true, and the fact that Belichick has officially been in his job as the head coach at the University of North Carolina for just a couple of days doesn't change that truth.

Does this mean Sirianni is a better coach than Belichick? Of course not.

There is a strong case to be made that Belichick is the greatest football coach ever, though that case got harder to make once he and Tom Brady were no longer together in New England.

What it means is that being a head coach in the NFL and being a head coach in college football in the name, image, likeness, and pay-for-play era of college football are different things.

And it might just be that Belichick will struggle in either of those worlds.

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