FWIW, Vanzeir led the team in goals per minutes played at 237. That's not impressive for a team's lead striker, but considering how screwed up this season was for him, I don't know that you can call him a bust. Also, I'd definitely bring him back, unless he wants out. If he can get and stay healthy, I'd expect better production out of him next year, especially if the team brings in another legitimate forward or attacking midfielder (or both).
Would be great if he keeps the racial slurs to a minimum next season too.