See the below:
To correctly slightly, I'm pretty sure Poch wanted rid of Baldini and then Mitchell came in, and either Poch wasn't keen or they fell out, because Poch moaned about a DoF again and they put Mitchell on gardening leave until he left.
Seriously, if there's any two single things that a BS about poch it's that he has any sort of agent or 'representatives', and that he would work with a DoF. I'm pretty sure he'd fall out with United even on the topic of keeping Carrick or McKenna (or, basically, anyone that isn't Jesus, D'Agostino or Jiminez) in the first team staff.