I'm admittedly struggling to believe this emerging narrative that our players lack the right mentality or culture at the club, and that it's something that's been pervading since Fergie left.
Our squad has changed massively since that time: the only players who are really still around are DDG, Rooney, Carrick, Young, Valencia, Smalling and Jones. Valencia's improved under Mourinho, and Carrick's still a class act even if he's getting older. Rooney's the only one who sticks out there as having been someone to constantly complain about.
I do think there are some mentality problems in there, but they're being overplayed and overstated...the primary reason we've been a bit shit since 2013 has been down to poor management and an inability to put a consistent side together. Mourinho's shown some improvement, I think, and will continue to do so but I think we're speculating about a lot that's probably exaggerated.