Selling the players they currently have when their performance is declining will be a big loss for Manchester United, because the value of their players will also decrease. But keeping them is also not the right solution, Man United clearly needs a refresh in their squad. So whether they like it or not, Man United must sell their players at a loss and spend their money again to be able to recruit new players who are more promising.
I think this is the defined rule of everywhere that the more you are talented the more you are skilled than you are more valuable. Manchester united is selling their players in the situation when their performance is very low. And now they need to refresh their squad so that they maintain their performance. So the loss of Manchester United is very clear. Because the players they are selling will not have enough money but purchasing will be expensive. I personally think that there is a lack of things that should be placed on proper time. Manchester united has a good reputation and just by doing a little positive amendments they will rise again like amazing. The condition is only that recruitment should be on the requirements of the team.