NFL Insider REVEALS what coaches say is the cause of Marvin Harrison Jr.'s on-field issues 👀

Sports Illustrated and The MMQB's Albert Breer joins Scott Zolak and Marc Bertrand on "Zolak & Bertrand" to share what he's learned about what's causing wide receiver Marvin Harrison Jr.'s issues with the Arizona Cardinals. Breer details the one on-field concern that Harrison's current team has not been able to solve and explains why Mike Vrabel and the New England Patriots might be the perfect team to help him unlock his full potential in the NFL.