Bills apparently were willing to give up both 1st rd picks and a 2nd rd pick:
https://www.cbssports.com/nfl/news/h...ey-chubb-fell/
They had that deal in place with the broncos but fell through when Chubb was still there. I'm sure they would have offered the same deal to Ballard, but supposedly he wouldn't budge and wanted Nelson.
Man, I don't know, two 1st rd picks and another 2nd, I think I would have let Nelson go and take that deal.