Among the moaning and bitching on the manager, during Xavi's first 6 months, it's useful to have a look at some objective facts since Xavi came.
His first match was vs Espanyol at home in round 14.
When Xavi arrived, we were:
In 9th place
12 points away from Madrid
5 points away from Atletico on 4th
10 points behind Sevilla and Sociedad (2nd and 3rd)
4 (!!) in goal difference with 16 goals conceded and 20 scored in 14 games. 1.14 goals conceded per match, 1.42 goals scored.
After 6 months under Xavi we are:
In 2nd place
Same difference with Madrid, meaning Xavi won as many points as Madrid, although Madrid's team is better in almost every single position.
5 points ahead of Atletico, still a superior team to Barca and Spanish Champions at the time (so, Xavi won 10 points more than Atletico).
6 points ahead of Sevilla (recovered 16 points compared to them).
11 points ahead of Sociedad (recovered 21 points compared to them).
+28 goal difference in 24 games. 20 goals conceded in 24 games, 0.83 per match. 48 goals scored in 24 games, an average of 2 goals per match.
That is with only low-cost signings, minus Ferran Torres who everyone says he's shit.
In the last 20 games we finally had Dembele back and stop playing with Jutgla, Abde, and Demir. This is the table for the last 20 games to date:
The most points out of any team. The best defense in the league. 2nd best attack only one goal behind Madrid.
All that while trashing Madrid and beating every single top 8 team we faced (7 wins, one loss, and one draw), including scoring 4 past our two biggest rivals.
And still, people shit on the manager because surprise surprise. A team in early reconstruction and with no money to make top transfers doesn't play with grace and consistency.
The normal rating of Xavi's season is he did a great job (good at the very least), with some awesome moments far beyond what was anticipated (nobody believed we'd trash both Atletico and Real Madrid), and with expected problems that he will have to correct next season, with the addition of some top players which is an absolute must.
Then we can talk about tactics and such, and problems and things to correct. But those things are fucking normal. We can work on those knowing that we did a good job overall since Xavi came.