Not sure if it is correct to take a player's price tag into consideration when discussing performances, I think on ability it probably is, on effort it probably isn't. Though Pogba was overpriced, then watched the market skyrocket and thought, wait and see. Since then have only really been surprised by his inability to take games by the scruff of the neck. Seems to spend too much time going missing, which is not what a "talisman" does. Who is to blame? Pogba or Jose? Probably a bit of both.
As a City fan I used to get frustrated at quite a few of our players, when Pep came in he cleared them out, anyone without the right ethic went, I now struggle to name a player who is under performing on a regular basis, they all run further, tackle more and in KDB's case whinge when they don't think teammates do the same. I think that comes from the manager. However regardless of the manager he has to take some responsibility, at his price i assume he was bought to be a leader, and he is clearly not doing that at present. I suppose the saving grace is that if United wanted to part ways with him, under the present transfer market conditions they probably would make a profit.
Introducing Sanchez probably hasn't helped Pogba's work ethic.