I doubt any team is giving him a giant money deal and a 1st round pick to the Pats.
If I'm Belichick I tell Butler and his agent to sign the tender and play the year and we'll pick this up again next season....
Or don't and you can waste a year of your career and you'll still be in the same exact situation next offseason...
Because at the end of the day, I'm Bill Belichick and you're an undrafted rookie I gave a chance to, and there's no damn way I'm giving in to your demands and trading you for pennies on the dollar unless I get a 1st back...which most likely isn't going to happen, so sit tight take your $4 mill and shut up.