Up until the weeks before he was traded when he was grousing about his contract he was easily one of our best defenders.
He went to Cleveland for half a season and kept them from having a winless season so they made him the highest paid ILB at that time. The following year he had a multitude of injuries before suffering a torn MCL.
Last season he led them in almost every statistical catagory. A new GM was hired and the strength of that defense was its linebackers, they had a lot of good ones most of whom had rookie contracts, they were cheap, so they cut Collins.
The Pat's tried to trade for Collins last year at the deadline. BB knows what Collins is despite his small school pedigree. He is and always has been one of the best every down linebackers in the NFL. The same season he traded Collins he traded Chandler Jones, just because a homegrown player prices himself out of NE doesn't mean they're bad... it means they're too expensive.