Pogba wanted EPL exposure. Clearly it was not a football decision.
At the end of the day, Man Utd is not and will never be a club like Real or Barca. Their best players(95% of the time foreigners) will always want to leave for those clubs and they, like us, can't keep their stars if Barca or Real come calling. Difference between us and them is that they have EPL money.
As soon as superstars start doing well in the EPL, they want to run away to Spain. Suarez, Hazard, De Gea, Bale, Modric.
A few years with some more dabbing and pokemon haircuts, Pogba will start thinking the EPL is too small for him as well.