Initially, when uefa introduced the Ballon D'or award, there was no uefa nation league but now things has changed a little bit and I think they're going to be looking at it. However, regarding this season, uefa nation league is not going to count because Spain lost the final to Portugal. The champions league is going to be used to award this season's Ballon D'or and Dembele is going to win it. Yamal and Dembele both won trophies in their respective leagues, but Dembele won the champions league and Yamal didn't win the Uefa nation league.