There was a pretty good case to be made for LeBron last year, but this year I think he has to be named MVP regardless of Game 7's outcome (unless, I don't know, Player X from GS scores 50 and hits the game-winner at the buzzer; then, maaaybe, LeBron isn't the most deserving, but only then).
Curry is shooting a shade under 42% this series and has been very up and down; Green was suspended one game and a no-show last night; and Thompson has been meh. It takes a mighty effort to be worthy of MVP in a losing effort, but I think 2016 Finals LeBron would qualify (if, in fact, the Cavs lose, a result I'm feeling less certain about these days).