There were rumors about this before we made our second bid which most people seem to say is BS, and the ones that don't, say it doesn't really matter because Coutinho would only want to move to us.
Pochettino managed Coutinho while on loan at Espanyol and it's possible Coutinho may want to play for him again (they have a good relationship).
He's a very down to earth, humble player. He likes being in a rhythm and maintaining familiarity. If he does move from Inter (which it doesn't seem like he does), he may opt to play for a manager he knows well (Pochettino).