sapui5 table binding with odata entity and local json model

I want to show different data in my table. On the one hand data i get from an odata service, on the other hand there is a local json model - loaded with data from a different odata entity - from which i need one property be shown in the table.

My question now is if there is a way to get both these datasets into my table. As of now i found only 2 ways: 1. a new Navigation Property in the oData model to the missing value (not possible) 2. all data in an extra json model and then bind that on the table (dont really like this approach)

Is there another way to solve a problem like this?