But for me something like that is also not a mistake because as long as the results continue to go according to plan then it is not a problem but as much as possible Flick must remain careful because trying to do the best in all competitions that are lived can make fitness a little disturbed so he must be more able to manage players well so that their performance remains consistent and even feared but on the other hand they also do not export players harder.
Barcelona almost got a draw against Chelta Vigo but was lucky Rafinha scored the winning goal in additional minutes. Chelta Vigo is able to make it difficult for Barcelona in the match so it is not impossible when facing a distant opponent more balanced they will experience unsatisfactory results. Flick did some rotation in the match and maybe he tried to refresh so that his foster children could be far more fit.
Barcelona is in a pretty good moment and maybe the density of the match schedule forces Flick to continue to maximize the existing strength and if the wrong rotation can give unsatisfactory results so he must be really careful to determine rotation.