Not really mate, as City had nothing to lose & everything to gain with a deal for Ronaldo. On top of that, it'd have been another "Welcome to Manchester" moment if nothing else.
I've been in similar situations where something I could do with, but could also live without was offered & I've done exactly the same thing every time. Stated what it was worth to me & told the other party to take it or leave it. Sometimes you win. Sometimes you lose. But if it was never part of your longterm plans anyway, you don't actually really lose at all imo.
Where I'd have been really worried is if Ronaldo became a key part of our plans. That would've shown a complete breakdown in the club's forward planning, post-Aguero.