Commisso? You believe what that idiot says? Other reports at the time suggested that Vlahovic was in fact offered by Commisso to Madrid, but they turned down the proposal- a more realistic scenario because:
A. Commisso was going to do anything to make sure Juve didn't get a hand on another one of his talents, and B. it wouldn't make sense for Madrid to go after Vlahovic when they had set their sights on a summer move for Mbappe, at the time. Not to mention they already had a world class forward in Benzema anyway.
As for City, I live in the UK and I can tell you this is the first time I'm hearing this because I didn't see anything in the papers. But regardless, British press is never reliable in the slightest when it comes to transfer news, that's just a well known fact by this point.
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Based on reliable journalism, not 'Daily Mail' rumours.