I think with the Patriots, Brown can return to being a 1,400 yard WR again. He is being wasted in Philly.
I think he will only command a second rounder. And I see the situation much like Randy Moss. Moss underperformed with Raiders and was toxic. And he was 29 at the time too. He came to the Patriots and had a record breaking season. Sure Brown ain't Moss and Maye ain't Brady, but Maye is a better deep ball passer than Brady and Brown is a great deep threat.
I think Brown would be a model citizen here (at least for a few years). He would be happy that McDaniels would put him in the best position to succeed. He would be happy that he has an accurate deep ball passing QB on the verge of being elite. He will be happy playing for Vrabel who he has a great relationship with. And he would be happy playing for his favorite team.
I think the Pats will trade for him. But then again, Brown doesn't have a no trade clause. So he doesn't have control of where he goes if the Eagles decide they don't like the Patriots' offer. So there is always a chance that Buffalo, San Diego, or another team outbid the Pats.