Cool moment at the Paris Saint-Germain game Wednesday ... when Neymar went into the stands to personally greet one of his favorite celebs, Ninja!!!
Of course, Neymar didn't play for PSG because he's still recovering from a foot injury -- but he made it back to Paris after raging at Carnival in Brazil with enough time to make kickoff.
The bad news for Neymar, his PSG squad got beat up by Romelu Lukaku's Manchester United squad in a 3-1 thrashing ... bouncing @PSG from the UEFA Champions League.