Jeff Green would be an awesome fit on all 3 of those teams.
LA Clippers desperately need more size and athleticism on the wing. Jeff would slot in nicely as 4th best player behind CP3, B.Griffin and D.Jordan. Give them a strong core to work with for next 5+ years.
New Orleans have so much quality with their bigs (A.Davis, Asik, R.Anderson) and in the backcourt (J.Holiday, T.Evans). If they could find a strong starting SF to finish that off, they'd have one of the best starting lineups and sixth men in the league.
Memphis has been incredible this year. I thought they would need to add an above average starting SG or SF to truly turn themselves into a title contender ... but I might have been wrong about that with Marc Gasol taking his game to another level this season. Still, if they could get that player, and Jeff Green is that player, it would a big boost for them.