What did he say that was out of place?
I know he said something along the lines of - if he was a fan he wouldn't bother going to the US tour matches. Generally dissed the tournament, and a lack of first teamers being available because of the World Cup (which hasn't been a problem for many of their opponents). And also that he'd like to make a few signings but might not be able to. So? All of what he said was perfectly reasonable and accurate.
The ones who aren't playing. This is normal.
Utd aren't Chelsea, and not as trigger happy when it comes to sacking managers. Mourinho's at no real risk unless they fail miserably.
They'd go for Pochettino. So, I hope Mourinho does just enough - but not too well!