My advice for Barcelona is to become more strategic in their spending and get more credible young players to grow. It's obvious that things are no longer the way they used to be for Barcelona unlike in the past where they got their big player squad yet performed awesomely well. Now things are no longer the way they used to be for the club and the earlier they readjust their gameplay and look out for more investment opportunities the better for them.
Barcelona chew more than what they could bite and it's the consequences of their actions that is hunting them. Not sure if they are going to follow that route again. The mistake could have been avoided but they signed many players to the point what the club was making was below average of what they were paying the players, some of them had pending wages because the club don't earn enough to pay everybody, it's the reason why they got into that mess in the first place.
I read somewhere that they have paid all their debts, but I'm still in doubt. They are going to play this season without buying any players and probably under pay some players. If they are not paying these players their complete bills, then it means the debt is still there because they will be owing another set of players again. Assuming they won the Champions League last season, it might have help them achieve more success with fans and subscribers.