They play with 3 full days of rest, at home after a relatively easy FA Cup game.
We will have only 2 days of rest and have to travel to London, after having played Eibar on Saturday. Eibar is playing very well right now, in particular on their home field.
Conclusion: Play our best team on Saturday and risk defeat against Chelsea on Tuesday.
We just played a 0:0 game at home against Getafe, after a 2-day recovery after the CDR semi in Valencia. Who thinks that Getafe has a better defense than Chelsea?
I would gamble with LaLiga. We just can't play the best roster. Same sort of game can't happen vs Chelsea as it happened vs Getafe. We would get crushed by Hazard and Favregas.
Obvious starters for Eibar game. Dembele (is probably going yo be max. substitute vs Chelsea, so if he can he could play the whole game or at least 60 min.) Them we have Coutinho. He should play 90 min. I would play Mina the whole game and then Umtiti. Pique is injured, he needs rest.
Start Paulinho/Gomes as well. Iniesta/Rakitic and Busquets should be all on bench with Suarez and Messi. Play Paco and D.Suarez. I know we would most likely lose this game, but I don't care. We just can't have another bad result on away game again.
Clear starters vs Eibar:
Dembele
Coutinho
Semedo
Mina
Gomes
Umtiti (he can manage to play two games in short time. He's a beast.)
Digne
Paco
D.Suarez
Players who should be rested:
Messi
Suarez
Iniesta
Busquets
Rakitic
Pique
They all need break. Maybe even let Cillessen play vs Eibar.
We would still have small chance of beating Eibar and then we have fresh legs for our most important players vs Chelsea.