I think Djokovic will win the French Open, he seems to have the better of Murray at every major grand slam over the last few years. 3 sets to 1 is my prediction.
I also think Djokovic will win the French Open but I don't think it will be an one-sided game, and so I have bet on Andy Murray +5.5 @ 1.807 today.
this is only grand slam that djokovic need if he takes this one mark my words he will take all four grand slams this year
if he wins this he will take US and Wimbledon to
He is not young anymore and might be retiring soon so if he wants the world to remember him as the prince of tennis then he needs to make sure that he keeps on winning everything up. Personally I like murray more, and it is not going to be easy for djokovic to get the grand slam and game might be over 39.5