Inflated means larger than it should be. If Etihad literally don't have the money to give us 60m and we're getting it from elsewhere channeled through them then it is inflated.
It's also seemingly legal based on UEFA's rules if they've agreed on the value, but the two are not mutually exclusive.
It can be described as inflated accurately regardless of whether we're innocent or not.
Personally I think it might be time to change the Etihad sponsorship on the shirt at least. It's a tarnished name, and getting a legit 3rd party like Nissan would go a decent way to making the commercial revenue more legit.