Goes more into depth as to why he isn't playing Mata, I think the point he is trying to get across is how Oscar, excellent with the ball as his No.10, off the ball he understand better how to benefit the team. Mata he says, through no fault of his own, has got used to playing a certain way and needs to change that. Talks a bit more about how the current Chelsea team is different to his old team in terms of not having Drogba in the air for crosses and the passing needing to be shorter.
Also look at the average formation of the Arsenal players during the Marseille match (image comes courtesy of @orbinho)
The left side looks quite badly exposed and explains what Mourinho is trying to avoid by playing Mata out on the wing. You can see why Monreal comes for us as well to make sure later on in matches we don't get exposed. I do think the manager and Bould will need to look into this and possibly one of our midfield trio needs to drift a bit wider that way to make sure we aren't exposed.
