It'll end in tears, but what a ride Manchester United fans are in for! In fact, what a time to be a football fan in Manchester now that, arguably, the best two coaches in the world are going head to head again.
Arguably? I've got to reserve room at the top for Carlo Ancelotti. He's a class operator.
Anyway, not before time, United have got it right. This is what they should've done when Fergie announced he was leaving. Mourinho's job application the night that Real tipped them out of the C Lge was wrongly ignored and they've paid a heavy price. Mind you, how many of us haven't f****d up somewhere along the line?!?
David Moyes was the right man - at the wrong time. I advocated change when it was blindingly obvious part way through that first post-Fergie season that it was going wrong. I stand by what I said, but....
I strongly believe that he was a far better option to back than LVG. His two years have been little short of a disaster - and I don't like using that word. Disasters are what happened in Munich and at Hillsbrough. In that context, the sport of football is irrelevant.
LVG ripped the heart out of United. He changed everything that was great about them. Little things, like splitting the dining room arrangements. The senior players were kept apart from everybody else at the club, instantly causing rifts and splits. Fergie, who I have been critical of in the past, never allowed that. He knew the value of the 'family'.
The players tired of van Gaal's rigidity and dull training routines. A 5.15 kick off would require a training schedule to fit. Why? No-one else in the league adjusted like that. It didn't bother Leicester too much last year did it? Or United in the past.
On the pitch United were awful - passing sideways and backwards while van Gaal tried to convince us about the value of possession. Nonsense - look at Leicester's possession stats last season.
Deep in United's DNA is a need to entertain. How many times down the years did we hear Fergie say 'we never make it easy for ourselves'. I've been at Old Trafford when the place has exploded with last minute drama. It was fantastic.
United is a wonderful football club. I know I haven't endeared myself to supporters over the last few years with some of my calls, but I never spoke without knowledge. I felt the pain of those who love the club. It was terrible to watch it going so badly wrong. I simply pointed those things out - but was I wrong?
After Dalglish Liverpool never got it right. Well, the current version of Graeme Souness might have had more success, but not the one that turned up trying to fight everybody. I know that feeling. I've been there as well! What I would add is that Graeme cared deeply about the club. He still does. He wanted to fix things. He needed to fix things, but not in the way he tried.
My point in mentioning Liverpool? Theirs was terminal decline. Klopp might get it right, but it's still a long way back. United, I believe, HAVE now got it right.
I'm wondering what version of Mourinho will turn up? The Special One? The Angry One? The Happy One? Like I said, maybe he's just The Right One. He'll have something ready for us that's for sure.
Whichever it is, he won't change. There will be rows, tantrums and eventually it will end in tears. But he'll win things. And he'll bring back the fun.
Remember the first team he put together at Chelsea? What a good side they were - Duff, Drogba and Robben up top. Lampard storming forward from mid-field. Yes, Mourinho can be pragmatic, but he knows how to entertain. His Real Madrid champions did just that as well.
I wouldn't rule out Mourinho winning the title next season! Why? Well, he knows the course. He's smarting. He'll have the ammunition. He'll want to get one over on Guardiola early on. He'll be a man possessed.
City fans will, of course, disagree. Guardiola is just as likely to prove me wrong. He too is smarting after - by his standards - a failure at Bayern. Failure it was, however you dress it up. Winning the league and Cup there is a given. His job was to win the C Lge. He failed.
The task at City is even bigger than the one he inherited in Munich. Agreed, trying to follow what Heynkes left was always going to be difficult. Guardiola did win titles and Cups, with a really good team. Are City anywhere near as good? No. There's a massive re-building job to be done there. OK, there is at United as well, but I think Mourinho's knowledge of our game, grounds, systems, the whole package, gives him the edge.
What about Chelsea, Leicester, Arsenal, Liverpool, Spurs? There's a lot of activity to come yet this summer that means I'm going to delay any further views. I'll deal with all this nearer to the start of the season. Right now, its fair to say the sun is shining in Manchester. Now, there's a thing........!