By Wilton Jackson The union released a statement asking to change to the league’s concussion protocol ahead of football games on Sunday. The NFL Players Association is requesting a change to the league’s concussion protocol ahead of the Week 5 slate of games. In a statement on Friday, the union wrote that it agreed to change the concussion protocol to “protect players from returning to play in the case of any similar incident” in the nature of the one seen with quarterback Tua Tagovailoa in the Dolphins’ game against the Bills on Sept. 25. “We would like these changes to go into effect before …