"The victor of Belgium v France will be the firm favourites to win a World Cup that has made for compelling viewing from first to last", he added.
Speaking to beIN sports, the 27-year-old said: "I have said 100 times before I am happy at Chelsea, but we will see what happens".
Chelsea superstar, Eden Hazard, has continuously been linked with a potential move to Real Madrid and has been touted as the ideal long-term replacement for an ageing Cristiano Ronaldo.
Do you think Hazard will leave Chelsea in this window?
Deschamps brands Henry as France's 'enemy'
Belgium winger Nacer Chadli has said Spanish coach Roberto Martinez deserved credit for the team's success at the 2018 World Cup. Belgium beat France 4-3 the last time the teams met in a friendly in June 2015 in Paris, when Marouane Fellaini scored twice.
But Hazard believes Madrid are still an attractive destination for any footballer in the world, even without legend Zidane at the helm.
World Cup knockout football is not easy, but we have a great atmosphere and this team never gives up.
Twenty years on, he's just two games away from matching Zidane's feat.
"I might be interested in Real Madrid; they know what they have to do", he admitted back in April.
Asked about his feelings if he could not move to Madrid, he said "The blue sweater (of Chelsea) suits me well, so it does not bother me if I stay". France vs Belgium will be interesting.