Yeah I have also seen the news and I'm surprised about the result. 
Because Xavi was looking very determined to leave. Like you said the chairman was doing everything he could to convince him to stay but first Xavi didn't seem likely to be convinced. Maybe Xavi wanted to give it another shot after starting to get positive results for quite long.
I don't think he is a bad manager at all. He couldn't maintain the success in the La Liga which I criticized him for before but this improvement might be a good sign for the future. Maybe one can say that they are eliminated in the Champions League as well. But I would like to underline an important thing there, it was due to the red card otherwise I believe Barcelona would reach the semi finals.
Because Xavi was looking very determined to leave. Like you said the chairman was doing everything he could to convince him to stay but first Xavi didn't seem likely to be convinced. Maybe Xavi wanted to give it another shot after starting to get positive results for quite long.I don't think he is a bad manager at all. He couldn't maintain the success in the La Liga which I criticized him for before but this improvement might be a good sign for the future. Maybe one can say that they are eliminated in the Champions League as well. But I would like to underline an important thing there, it was due to the red card otherwise I believe Barcelona would reach the semi finals.
Unexpectedly... I read yesterday that after another meeting between Xavi and Joan Laporte, his decision remained unchanged and he will leave Barcelona at the end of the season. But today I see that there was a second meeting in the house of the club president, and this allowed Xavi to change his decision. Look first, Alonso stayed in Bayer, now Xavi remains in Barcelona, all that remains is for Klopp to stay in Liverpool and everything will be as before...))
But indeed on the other hand after this news broke then of course now Barcelona have a job they have to complete at all costs.
First they must try to provide comfort for Xavi at least there is more appreciation that fans or Barcelona should do when Xavi has good momentum and another problem is of course related to their financial problems.
Currently their financial problems always appear and continue to occur every season which makes Xavi confused by maximizing existing players and so that Xavi can be free with his coaching style then inevitably this financial problem must be resolved and not allowed to drag on.