He follows Cruyff (and Bielsa to a point), so either a 4-3-3 or 3-4-3 - he played a 3-4-3 mostly when at Betis - but if they need to seriously press then its a 3-4-1-2 - with this Barca team being a bit slow, I'd be surprised if the doesn't go with a 3-4-3 - ala us with Rafa - with the 2 either side of the forward tucked in - this should benefit both Messi and Griezmann - shame they don't have Countinho right now, could have benefitted a lot
Its possession based football with a cutting edge - not passing for the sake of passing - with better players, he should be able to implement this quite well
And he is the biggest fan of Messi on the planet