#3 Belgium have arguably the best midfielder in the world with a capable supporting cast
The genius of Kevin De Bruyne and Eden Hazard have often been talked about and both are dazzling talents whose astonishing skills, passing and shooting abilities can strike fear in any opposition. De Bruyne, in particular, is in the form of his life and led Manchester City to an unprecedented success (100 points) in the Premier League last season. He is arguably the best creative midfielder in the world right now.
They aren't the only ones who can lead Belgium's charge from midfield, though. Yannick Carrasco, Mousa Dembele, Marouane Fellaini and Adnan Januzaj are decent options. Coach Martinez is almost spoiled for choice in this department. In Fellaini, he has someone who can also take care of the defensive side of things as others rampage forward.
In Dembele, Belgium have one of the best box-to-box midfielders in the world. Martinez could actually drop the flamboyant and controversial Radja Nainggolan because he has so much talent at his disposal.