Not if the two Alpha Male in here is gunning for Baloon Dors.
Neither will want to be a secondary in team.
How do you know? Do you have a crystal ball?
Haaland & KDB seem to get on quite fine. You've completely omitted the most important person in the equation, Pep Guardiola.
Within 12 month of becoming Barça manager, he got rid of Ronaldonho, Eto'o, Deco & others to improve the squad, but also for squad unity & discipline. Pep also managed Messi, & twice managed & got rid of Yaya Touré.
When we acquired Bernardo & Mendy from Monaco, Mbappé was also in the conversation, but it became clear a deal had already been done with PSG for his transfer the following season.
When asked about Mbappé recently, Pep laughed & said the world knows he's Real bound, but there wasn't a "No. We're not interested".
I'm confident that in the unlikely event we were able to get Mbappé, that City would have carried out our usual due diligence & our squad unity would be perfectly fine.
If you know different, feel free to enlighten me. ¯\_(⊙_ʖ⊙)_/¯