Bills in midst of busy offseason in bid to build contender

ORCHARD PARK, N.Y. (AP) — LeSean McCoy has a new lead blocker in Buffalo after the Bills signed fullback Jerome Felton. Newly acquired quarterback Matt Cassel is eager begin competing for the starting job. Free-agent receiver Percy Harvin arrived in town for a visit. Also, a person familiar with discussions told The Associated Press defensive[…]