Won't solve anything, in fact we will likely go backwards without one of the best 3 managers in world football at the helm.
We need to look rationally at what's been going on here for the last 4/5 years. Jones, Smalling, Darmian, Young, Fellaini, Rojo, now Lindelof. These players have let us down so, so many times and been at the centre of embarrassing performances under Moyes, LVG and now Mourinho. A new manager will not be able to get them playing better and to the level we need. I don't care who it is, even Sir Alex would have cut losses on the above by now.
We have had 3 manager and multiple 'world class' or top quality players come in and out of the club (Ibra, Lukaku, Pogba, Sanchez, Di Maria, Falcao, Matic) and quality young players like Rashford and Martial, all whilst having arguably the best GK in the world, yet the deadwood have been the one constant. Our soft core of substandard players who line up for us, week in week out, must be removed before we can expect to compete again.