Eagles' Nick Sirianni fires back at Jonathan Gannon critics after win: 'He's going to be a head coach in NFL' | CBS Sports Headlines Eagles' Nick Sirianni fires back at Jonathan Gannon critics after win: 'He's going to be a head coach in NFL' Sirianni adamantly defended his defensive coordinator … Continue reading Eagles' Nick Sirianni fires back at Jonathan Gannon critics after win: 'He's going to be a head coach in NFL'