Nipsey Hussle Warns Cavs Fans, Better Not 'Boo' LeBron in Cleveland Return!

[[tmz:video id="0_szr4zyqo"]] LeBron James is making his much-anticipated return to Cleveland on Wednesday ... and Lakers super fan Nipsey Hussle has a very important warning for Cavs fans: DON'T YOU DARE BOO THE KING!!! The atmosphere in Quicken Loans…