I get that, I know it will elevate us but once he goes can you imagine Sky and the likes "well Everton couldn't expect to keep hold of a manager of Mourinhos calibre could they, it was always just a stop gap etc" i just think he will make the whole club unstable because of the uncertainty that would surround him being there. The whole world knows he wants the Utd job and they will eventually come calling.
If he stayed for 3 years (hypothetically) he wont win us the league in that time (or very unlikely) people will use the Leicester scenario but we all know that's highly unlikely to be repeated again any time soon. He may win us a cup but would you really rather us sacrifice getting in the right manager in now and giving HIM. the funds available to rebuild us and stabilise us and move us forward to a 3 year (again hypothetical) roller coaster with Mourinho only for him to walk away once he's done playing with us for a "bigger" club which then leaves us with potentially all Moshiris investment spent and an extremely expensive probably over paid squad full of egos who may not want to play for a new manager.
It's all about opinions mate I'm not saying mines right it's just my opinion but I want us to build something, we have a chance here with this investment Moshiri is about to put in but I don't think he can sustain regular investment like he's about to give I think it'll be one initial splurge then we'll be back on a budget albeit it a better one than years gone by and I'm not sure I trust Mourinho with that money. How many players have Chelsea got on loan admittedly he's not signed all but he let De Bruyne go because he fell out with him, Lukaku when they had no strikers practically, Cuadrado (sp) springs to mind. He doesn't always get it right.