Most fans who say they are boycotting are never going to come back, because once they find something else to do on Sunday afternoons they realize that watching an NFL game on TV is an enormous waste of their time. Most of these "boycotting" fans will never come back even if Colin K. gets a haircut and starts standing up respectfully for the national anthem ... even if he publicly endorses Donald Trump.
Endorsing Donald Trump might woo me back...but nothing short of that.