The question is still remain the same for intermilan whether lukaku or dzeko that wil become a striker but manchester city has so many options for midfielder. Since foden, Gundogan, Bernardo silva, KDB and almost all of players are very healthy right now and i think if that's a bit difficult for pep to determine the best midfielder to face intermilan. In my speculation, if manchester city may be using the same lineup as when it was MU.
Manchester City is no doubt the favourite to win today's UEFA champions league final against inter Milan and I think Pep is going to play the same line up he used against Real Madrid in the semi finals. Pep Gardiola still has a lot of quality players like Mahrez, Foden, Alvarez etc. in the second team that he can always bring in to make a difference. Lautaro Martinez is Inter Milan's top goal scorer and assist maker for the season with 24 goals and 9 assist in all competitions while Lukaku and Dzeko are both in second position with 13 goals to themselves. Lukaku has 7 assist to his name while Dzeko has 4 assist, If Lukaku is fit enough, I think his assist record can give him an edge over Dzeko for a starting place in the final.
Manchester City should play the same strategy and formation against Real Madrid against Inter Milan. Manchester City played very well in both matches against Madrid. Every player in the team performed very well in their respective positions. The important thing is that every player in Manchester City's attack is in very good form right now. And it's difficult for Inter Milan's defence to stop them.
Martinez is Inter Milan's most important player. If Guardiola can stop Martinez, Inter Milan's attack will be greatly weakened. Also, Henrik Mkhitaryan, Correa and Skriniar are likely to miss the match due to injuries. It will be more difficult for Inter to do well in this match without these three players in the squad.