I won't post it all here, but yeah if you read the tweets by Rapoport, Schefter, etc. it seems there's a lot of tension brewing between Watson and the Houston Front Office. Doesn't seem like a small thing either and could escalate to Watson demanding out of Houston.
The Pats may be at a slight disadvantage over teams like Miami or Denver who have Top-10 picks this season which Houston could covet more than #15 New England has. I would think a potential deal could be, Gilmore, Shaq Mason OR Thuney + #15 + 2021 3rd rounder + another future 1st rounder + another future 2nd or 3rd. If Thuney, it'd have to be in some sort of sign-and-trade format since he's a FA.
Basically, it'll likely cost the Pats a player like Gilmore/Thuney/Mason + 2 first rounders + 2-3 more future picks. Yeah it's a lot, but Watson's a beast and still just 25 years old. The Pats do have the cap space to fit him in AND would still have some leftover to build around him.