Hungary coach Marco Rossi knows they must be careful to keep track of Manchester United winger Daniel James tonight against Wales.
Hungary need just a point in Cardiff to qualify automatically for the Euros.
James has been a revelation at United since his 15m transfer from Swansea in the summer, adjusting to life in the Premier League immediately by scoring three goals and creating three assists.
"James is a player that is playing with a motor bicycle because he is really fast," Rossi said.
"I have never seen someone in the last period as fast as him, maybe Mbappe. He's unbelievable."
Rossi added: "If we leave him space to run he could be dangerous. This could be the key, but we work a lot on the defensive line and will try to give confidence to our players."
