He is no Neymar but close to him.
A short period of Neymar maybe. Vini is much more of a pure winger: dribbling, pace and now also finishing.
Neymar was that type of player for max 1-2 seasons. He was too obsessed with becoming the new Messi, trying to be a playmaker which in term reduced his efficiency on the pitch.
As long as Vini is fine with his LW role he'll do great. If he wants to be more involved in the center as he gets older, that's when there will be issues.