Man United has retained several players for a long time but the results are always the same even though they have changed coaches several times. So it is quite natural that now Man United is starting to change the depth of its team squad on a large scale.
Seriously up till now I don’t know what Manchester United problem is, I won’t say their current problem is from coach, because they have changed different coaches, and their is no improvement in Manchester United performance, I will even say their performance keeps on getting worst. Since Manchester United have tried different coaches, and things are not working out, then they should try and change some players maybe their will be improvement, but if they can sign new players and Manchester United performance doesn’t improve, then Manchester United problem might be from the management.