MANCHESTER UNITED AND CHELSEA FC, which is better or which will have a better season?

We all saw and understood how last season was among the worst season of Chelsea Football Club in the recent time. After the change of management and successive change of coaches, they were unable to end above the top 10 in last season's English Premier League. For the fact that they bought many new talents, we expected them to perform better this season but to my surprise Chelsea is still struggling to play good football.
In the other hand, Manchester United my club did very well under their coach Eric who was new then. Everyone expected that they will consolidate their performance this season,  but this season is trying to be a different story for them.

Between Manchester United and Chelsea, who do you think will have a better season?