Spain for sure, but I think France got a good chance too

Spain or Germany or Portugal or France or Italy or Denmark or Netherlands or Hungary or Bosnia and Herzegovina or Scotland or Switzerland or Israel or Croatia or Belgium or Serbia or Austria or Czech Republic or Ukraine or Georgia or Albania or England or Greece or Republic of Ireland or Finland or Norway or Slovenia or Kazakhstan or Wales or Turkey or Iceland or Montenegro or Romania or Kosovo or Cyprus or Lithuania or Sweden or Slovakia or Estonia or Azerbaijan or Northern Ireland or Bulgaria or Belarus or Luxembourg or North Macedonia or Armenia or Faroe Islands or Latvia or San Marino or Gibraltar or Liechtenstein or Moldova or Malta or Andorra.

Jk. Hard to argue against Spain tbh

Spain has to be the favourite. France and Germany, depending on form, could also go all the way.