He should go for lots of reasons but I'd hate for people and the board to think that that's where the buck stops. The overhaul needed is massive and cannot be ignored. We start our games with 3 forwards none of which are quick. You could say Messi is quick but you only get that in small bursts. Messi should not be playing a full 90 minutes with his stamina and at his age, I think most 32 year old wingers would struggle to do the full 90. Suarez is not good enough on the ball nor does he have the physical conditioning to last 90 mins either.
Busi slow old, rakitic slow old, vidal slow old. Leaving Frenkie and Arthur who are young enough and fit enough but even Arthur has his physical issues. Pique slow old, Umtiti slow, Roberto slow and not a defender. So our pace comes from Alba who may get an assist 1 in 5 matches, Frenkie who doesn't play in advanced positions and who?
A full on Fifa-style transfer market needs to happen followed by a manager that brings a strong mentality and at least slightly attacking football. As for the board whoever is responsible for signing Dembele and Coutinho for far too much money needs to go, never were either of them worth that much. Coutinho was class at Liverpool but maximum worth €70m-€80m. Dembele was worth €60m at best after 1 decent season.