You're right the odd given to flaminense is not a true reflection how good flaminense is so anyone who can take the risk should try and bet on flaminense because this game is a 50/50 game I don't see Chelsea as that fantastic to the point of giving 5.72 odds to flaminense let see how this game will go a expect a close one from this game
The bookmakers see Chelsea as the favorite to win against Fluminense; that is why Fluminense was given higher odds than Chelsea, but sometimes odds don't determine the outcome of a game. If Chelsea can struggle to beat Palmeiras in the quarterfinal, I believe there is a chance for Fluminense against Chelsea tonight. Any gambler who feels that Fluminense has what it takes to beat Chelsea tonight can place his money where his mouth is.