Based on what?
My opinion is that the O's can get much more production with Nunez and additional players than they can with just Manny.
Machado has been worth essentially twice as much (2.5 bWAR to 1.3) as Nunez, and that's with a down offensive year and a third of his time playing out of position for Machado, and a likely career year and unexposed defense from Nunez.
Each additional roster spot you have to use combination to meet Machado's value is one you can't use to add additional value overall.