NFL news roundup: Eagles assistant GM Alec Halaby stepping away from role  NFL.comEagles assistant GM, senior VP departing after lengthy tenures  ESPNEagles lose another valued front office executive from Howie Roseman’s staff  NBC Sports PhiladelphiaThe Eagles just lost one of the most important people you’ve never heard of  PennLive.comFalcons hire former Eagles exec Bryce Johnston to handle salary cap, contract negotiations  NBC Sports