#1 Mauricio Pochettino

The Argentine has built a great reputation for himself due to the work he's done at Tottenham Hotspur. He has managed to build a great squad with a net spend of only €29 million and at the same time, he has convinced top players like Harry Kane and Dele Alli to stay at Spurs as well.
The former Southampton manager has also managed to take Spurs from a struggling club to a club who has constantly challenged for trophies and at the same time developing young players and play good attacking football.
Even when Zidane left the club in the summer, he was the No.1 choice and next season as well he will be the No.1 choice for the Los Blancos. Though Tottenham are tough negotiators, it's worth noting that when Florentino Perez wants to buy someone, he usually gets his man.
Despite Pochettino's excellent work with Tottenham, the Lillywhites have failed to win anything and always falter on the last line.