A $500,000 a year increase in an offer by the Denver Broncos could lead to a five-year contract for left tackle Ryan Clady, a source said.

Since last year, the Broncos have been offering Clady a five-year, $50 million contract. By increasing the offer to $52.5 million and showing a willingness to guarantee significantly more than 50 percent of the contract, the Broncos have Clady thinking about accepting the offer.