Bayern chiefs Karl-Heinz Rummenigge and Franz Beckenbauer have been openly critical of City's new wealth.
But Robben insists: "They are not the only club with a lot of money in Europe.
"You can't just buy quality, you have to build a team. Having enough good players will give you a chance of hitting the jackpot at some point.
"They have the potential to progress well this time."
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