IMO Xavi should have stepped in right now. No one is ever ready to coach Barcelona to be honest. And like [MENTION=15262]serghei[/MENTION] said,Xavi won't find another club to implement his ideas and tactics like Barca. People say that we should wait until 2022,2023 etc,but truth is that Xavi probably won't be a top manager until then.
Besides, let's say that we hire a good coach in the next 1-2 years(which is doubtful with the current board,but bear with me).If this happens,then Xavi's window for coaching Barca will probably close for many years,maybe even forever.
-If Xavi becomes a top coach in another club,he won't be able to easily abandon the club for Barca
-If Barca becomes a good team again under a decent coach,they won't fire him to get Xavi(who will probably never be able to reach his true potential unless he coaches a top team.Which top team will give him a chance other than Barca?)
Xavi has basically nothing to lose if he comes right now.
-Even though we tend to shit on the squad,it is still one of the best in Europe.Plus we have an old but still lethal Messi. If he is truly good,he can end up with a CL within the next 1-2 years,which would further immortalize him.On the other hand,no one knows how the squad will be in 2-3-4-5+ years from now.
-Even if we fail dramatically and end up throphyless,no one will blame him.
-If he turns out to be Valverde 2.0 and gets sacked after a couple of years,he still has a chance to coach Barca again in the future because of his legendary club status.