The Denver Broncos have upped their offer to Von Miller by offering to guarantee the Super Bowl MVP a record $70 million of the six-year deal, a person with knowledge of the negotiations told The Associated Press. The person spoke to the AP on condition of anonymity to share candid details of the blockbuster offer that also was reported by ESPN and the NFL Network. The sides have until 4 p.m. EDT Friday to get a signed deal into NFL headquarters. More...