Training camp is about to begin and a significant gap must be closed if the Broncos are to lock up left tackle Ryan Clady with a long-term extension.

The Broncos have offered Clady a five-year, $50 million contract extension with $28 million guaranteed, according to an NFL source.

The $10 million a year average would make Clady one of the league's five highest-paid offensive tackles. He is scheduled to make $3.5 million this year, which ranks only 31st among NFL offensive tackles.