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.
I don't think the line up against manchester united was strong enough.
Possible line up
According to the odds being given by bookies, Manchester City is tipped as 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 the 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 have 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 for a starting place in the final over Dzeko.