The NFL Players Association filed a complaint against the New England Patriots. The complaint is centered on the Patriots preventing cornerback Malcolm Butler from practicing when he missed  a voluntary practice when his flight was canceled. NFL rules prohibit punishing a player for missing a voluntary workout. The complaint was filed with the NFL management council without Butler's participation. Undoubtedly, he worries about further punishment from the Patriots. Follow me on Twitter: @RavensInsider Aaron Wilson covers the Ravens for The Baltimore Sun