Ok, my take on the media's blatant city bias - and trying to brand Utd as 'the money team' (vs City!)...
One thing I'll say about José, is that if you were a marquee player looking at how he treats big signings in his Utd time, you'd defo know that if you sign, he will play you and show great loyalty.
Pogba didn't really have a great debut season but José just played him and played him and Pogba's game has gotten better - and Pogba has won trophies since coming here.
Rom this season is very similar (though I think Rom has had a better debut season thus far than Pog had last season), but José is really loyal to him and just plays him and plays him.
Same with Matic, same last season with Zlatan.
So if you're Sanchez, you would know that if you sign for José you will play A LOT of footy, and on top of that, and thanks for José's aforementioned loyalties at Utd, you would know that you're joining a project with a well bedded in Pogba, Matic, Rom and a solid defense in a team that's on the up and that wins trophies.
And what of Guardiola's biggest signings...?
Jesus - rotates
Sané - rotates
B. Silva - doesn't play
Gundogan - if fit, rotates
He has nothing of the loyalty to his 'big signings' like José does.
We mustn't forget that he inherited Aguero, Sterling, de Bruyne, D. Silva - they aren't his signings, and even then, he rotates.
Joining City, you're joining a team with a guarantee of a PL medal this season - but you're also aware that you're joining a team at it's apex... what if you don't hit the ground running? You've got Sane, Sterling, Aguero, Jesus, de Bruyne, Silva and more in the Summer...
And you've got a maverick, unpredictable manager, who while very good, is probably the biggest gamble of a manager to play for.
Joining United, you've got a team on the up with a manager who will basically guarantee you start every game.
You go through a dry spell as a José marquee signing - no worries, play through it, as Pog, Rom and Zlatan are proof of.
Another factor, while not as important but still worth mentioning, is that joining city you're moving to a notably smaller stadium (that's never full), whereas with Utd you're moving up into a bigger stadium and a bigger fanbase.
TLDR - it isn't 'City or Money', it's 'Start every match or Rotate', it's '40,000 or 75,000'.
Food for thought.