Tom from San Antonio wants to know if I think Oakland free-agent quarterback Jason Campbell could sign with the Broncos and compete with Tim Tebow. Bill Williamson: I think Campbell could have been a possibility for Denver had the Broncos decided to replace Tebow. He’d be a good answer for the next couple of years. But the Broncos want Tebow to be the starter this year. I don’t think Campbell would enter that situation. He wants to be a clear starter and he deserves to be a starter.