As much as Xavi without experience was dangerous enough for them to win the La Liga title in the last season even though they beat Real Madrid with all the stars they have, Barcelona was lucky enough to have Xavi because they spent a few amounts of money while getting good results.
Barcelona has been trying so hard to use the money efficiently and xavi was helping the club a lot. Xavi is trying to help the club caused by he has been hired as a coach by barcelona and the club is also facing financial problem at this moment.
The fact that if barcelona doesn't have a lot of money to buy the expensive players due to the unstable financial condition. Xavi was able assembling barcelona even he has been only getting some new players with cheap price.
I would like to see that how good the performance by gundogan. It will be also a very interesting thing to see that his performance with barcelona after he has decided to leave from manchester city.
Barcelona was also unable to raising around 200 millions to get financial stable. La liga president has urged barcelona to do that but so far, only a few players sold to the another club with cheap price.