To play as well has he has, to get to his level and play with the intensity he does you have to be giving absolutely everything and be right on the cusp of boiling over. I think most/all players can only give that for so long and be let down by the cowards around them before theyve had enough. We've seen it with De bruyne lately - little signs of almost boiling over, but that's just cos hes playing at his absolute maximum, competing with everything he's got. I reckon if you put Kev or anyone similar in a situation to what Sanchez has had you'd see the attitude dip and/or the form drop. It's very different to the attitude shown by the likes of Ozil and Nasri for example - poncey little wimps with no bottle who should be avoided.
On top of that he's got the promised land - Pep and our team playing the way we are, waiting right here for him with open arms. Hurry up Alexis lad, if you need a lift up gimme a shout