Xavi had a very clear reason when he said he wanted to leave Barcelona, because he felt unappreciated when he was in this team. What he has done so far seems to be a mistake in Barcelona's eyes, because they want more than that.
The latest news is that Joan Laporta is reportedly urging Xavi to reconsider his plans to leave Barcelona. It seems that conditions have changed enough to make Laporta and the club management realize the importance and how significant Xavi's influence is at Barcelona.
Even now, Laporta is actually still convincing Xavi to stay, but the pressure that Xavi is facing may be so great so far.
This is part of the explanation that Laporta said during the interview:
I asked him if there was any way he could change his mind, but I saw him dealing with an insurmountable pressure that could be seen on his face, so I told him to relax if he saw it that way.
Source: Laporta about XaviIt seems that Xavi prefers to focus on the match that Barcelona will face. Because of that, not only in La Liga but also their struggle is still in the Champions League, which in fact is very prestigious.