In my humble opinion, Kevin De Bruyne is born to play, prefers to play and performs on the flanks and not in the pitch.
For a 4-2-3-1, playing in the middle as number 10, Mesut Ozil is the best in the World. Nobody has his class, his vision, his decision making, his capacity to explore the space, his capacity to calculate the time before to pass the ball to a team mate with the risk to send him offside.
But, before to debate, should be good to understand who is playing a 4-2-3-1 (with a proper number 10 like Mesut). How many proper number 10 there are at the moment in the World?
Ozil is one, Juventus today have played with the 4-2-3-1 for the first time since the the departure of Diego Ribas da Cunha seven years ago, Sarri at Napoli prefers to play with a 4-3-3 without an advanced playmaker, Chelsea are playing with 3-5-2, Manchester City are using their advanced playmaker on the flanks (David Silva) because haven't the right players to play with the 4-2-3-1 (and if they have played with this tactic, they used a winger in this position). BVB and Hoffenheim play with a fluid tactic, RBL tactic is based on an old school 4-4-2 like Benfica and Sporting and the 4-3-3 is the favourite tactic for Carlo Ancelotti with Bayern, Zizou with Real Madrid, Luis Enrique with Barça, Emery with PSG, and Espirito Santo with Porto.
Sampaoli and Pochettino are the only, apart Arsène Wenger, which are playing with the advanced playmaker. Tottenham are playing with two players in the middle behind Harry Kane (one of them is Dele Alli, not an advanced playmaker but a number 8).
Ozil v Eriksen v Vazquez.