The Denver Broncos have offered Von Miller a record $70 million guaranteed as part of a six-year, $114.5 million deal, according to a source.

The contract would make Miller the highest-paid non-quarterback in NFL history based on guaranteed money as well as the highest-paid player in Denver franchise history.

A source familiar with the talks said Thursday night that he was "optimistic'' the deal will get done by the 4 p.m. ET Friday deadline for designated franchise players to sign long-term deals.

Two executives from teams other than the Broncos said Thursday that Miller "would have to take it."