Patriots give Matt Corral second chance, bring back QB (source) - masslive. com
Former Notre Dame QB Ian Book lands with New England Patriots
Patriots sign QB Ian Book to practice squad
Source: Patriots signing ex-Eagles, Saints QB to practice squad – Boston Herald
NFL Rumors: Patriots to host QB Ian Book for free-agent workout – NBC Sports Boston
Patriots sign Ian Book as their third quarterback, per report - Pats Pulpit
NL Network insider Ian Rapoport: New Orleans Saints are releasing quarterback Ian Book, who could return to the practice squad if he clears waivers
Patriots Fill Final Practice Squad Spot By Signing Cornerback
Patriots add new QB to their practice squad