By Mark Zinno

Jason La Canfora, NFL Insider for CBS Sports and CBSSports.com, joined A to Z with Mark Zinno to talk about Colin Kaepernick’s new contract with the 49ers as well as other stories around the league.

Canfora discussed the NFL concussion lawsuit and gave some shocking facts when it comes to the NFL’s marijuana testing threshold in comparison to other career field tests.

Listen to the full interview below: