Vitor Pereira has managed in the Champions League with several clubs (I remember his famous Olympiacos team trouncing Arsenal) and he has won various leagues titles and trophies with Porto and Olympiacos. As assistant manager at Porto he actually won the UEFA Cup, or Europa League.
I like the guy, but he has no Premier League experience. To keep this squad of players in the Premier League we need an old hand, someone who is used to doing rescue jobs in the Premier League. Someone of the ilk of Big Sam. Not that I’m saying we should appoint Big Sam, but you get the idea.