Does Bobby Charlton earn United wins and trophies? I don't know what his role is but having him there won't change anything on the pitch. Gerrard will bring with him a media circus and unwanted distraction to the club and manager as evident by Klopp's last 2-3 pressers. Media are more interested in him than the current games we're playing. Lets not forget this is a guy who has failed time and time again to win the league and bringing him in now in any capacity will disrupt the atmosphere that Klopp is rebuilding.
I don't think it would disrupt Klopp, but only he would know. Regarding Bobby Charlton, yes, you don't know his role, neither do I, but United does. Did the bootroom score goals or save penalties? No, but I understand it was an integral part of our wins.