FCBarca
Mike the Knife
Who do you suggest as a back-up CDM for Busquets then? If Mascherano is not Barca quality, who can we possibly buy who would: a) be better than him, b) not cost 40m+ & c) be happy with a substitute's role?
Even if we assume for a moment that Tata won't continue, a coach will rotate as we've seen the perils of running your key players ragged...Depth is essential
As for whom, that's a different question and there are many on the market for under 40m that will be an upgrade to either Masch or Song at DM...The point has been that Javier is inadequate as a starting CB or backup DM for this club