just relocated his ex-teammate to front street ... firing a shot at Gilbert Arenas for telling the world he was going to Nick's bachelor party ... when Swaggy says ... HE AIN'T.
This started when we asked Gilbert if he thought Nick & Iggy would get over the whole De'Angelo Russell video thing. Gilbert told our guy yes ... and said he was all in for the bachelor party when it went down.
Young apparently didn't like the addition to his guest list ... BLASTING Gilbert in a since deleted tweet saying he's NOT invited and telling him to mind his own business.