If you look at his body positioning and how he is constantly turning to see where Ronaldo is, in my opinion, Villaneuva thought he could turn away from pressure assuming Ronaldo was rushing in like many attackers do in the box. Had CR7 done just that, Villaneuva would have let the ball through, turned and been down the wing.
Ronaldo stayed, however, and of course, you see what happened then.
i think its a fair conversation now that Barcelona has made their concerns public.
If i were to see this happen at a normal game i would think wow , what terrible defending. I would not immediately think he did it on purpose, but considering the context of the game, and the teams, And the rivalries. Do you think Villaneuva let the ball get to Ronaldo?