Is he really a surprise though? Everyone is behind the times here - everyone still talks about the Rutgers pipeline as a punchline for a surprise pick. But that pipeline's been closed for the last few years -- Schiano is gone, all of the players Steve Belichick played with are gone. There's no special connection there anymore.
On the other hand, Arkansas' fingerprints have been all over this team this decade. Check it out:
Ryan Mallett, 2011
Jake Bequette, 2012
Trey Flowers, 2015
AJ Derby, 2015
Deatrich Wise, 2017
Bret Beliema had been the coach since 2013. He was just hired by the Patriots, and one of his initial roles was to consult with them on the draft:
What is former Arkansas coach Bret Bielema's role with Patriots?
Note that prior to being at Arkansas, he coached at Wisconsin - and was a head coach of 2014 draftee James White.
Arkansas is the new Rutgers. Ragnow will be a Patriot if he makes it that far.