Messi got us top of the group stage with 2 goals against Juve and he got us to the next round of KO with 3 goals and an assist VS Chelsea mind you both teams were teams he hadn't scored against before. I don't think he's above criticism and believe people do have the right to question his attitude at times as it seems he can't be bothered at least he can act it, but this talk about letting him go or phasing him out is absurd.
I said all season long the only way we can do anything in CL is if Messi carries us and performs magic. He did that against Chelsea but didn't against Roma.
If he doesn't produce we're fucked.