Rapper Jack Harlow says he was NOT hanging out with Lou Williams on Thursday … claiming he has nothing to do with the Clippers star leaving the NBA bubble. The 33-year-old L.A. hooper reportedly left the Disney campus this week due to “excused personal reasons” … but is expected to rejoin the team at a later date. The whole thing seemed pretty normal — considering several players have left the bubble for a number of reasons in the past few weeks — until the “What’s Poppin’” rapper posted an IG Story with Williams.