https://www.theverge.com/2014/5/15/5721192/google-play-store-android-paypal-integration From the sound of things, the only valid payment method option available to link the two accounts is either paypal credit or bank account via debit card. Probably a requirement on Google's part. If there's a work-around at all it will probably be on the Google end. My guess is that it's simply using that information to link the accounts, not as an actual payment method in the play store.
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