All of these players were involved in rotation last season, so not sure what your point it. Mata will either be sold or play through the middle. Herrera will,be key or be sold, as he's the driving playmaker in the side. Carrick and bastian will play a game a week, they are there for leadership more than anything. Rojo will cover CB and full back if not sold. And Jose will try and win on all front.
You need to read his post properly then. He said that Mata and Herrera will be part of the reserve team which means he expects them to he happy sitting on the bench for most games without being sold. He put Carrick in the third team which means he will likely not play a game a week. Bastian maybe since he was in the reserve team. He put Rojo in the third team which means he will hardly get much chance to cover CB and full-back.
You should take a good look at the argument you are trying to defend instead of completely changing it to suit your lines of argument which are perfectly valid on their own.
Also I doubt Jose will try win Europa League. He considers the competition beneath him.

