Barcelona has huge problems due to large financial debts, poor organization of the club, disturbed relations between players and management, incompetent management etc.
Messi's departure was logical and expected due to all these problems.
Barcelona needs a good striker? Maybe Suarez?
In fact, Barcelona now urgently needs a lot of money to save itself from financial ruin and going into football mediocrity.
They can forget about some great football successes and trophies in the next few years.
It's obvious that Barcelona is not the favorite in the Champions League this year and they are still not sure that they will pass the group stage of this competition.
^ Barcelona is facing some real problems right now because they are in a really bad cycle. If they sell some players in the upcoming transfer window, they might not be able to stay in the top 4, so they won't be able to play champions league, so they will get less money. They can't buy anyone too. They can't even sack their manager because if they sack him, as per rules they have to pay the whole contract length. They can't afford that right now. So I think they just need to survive for 2-3 seasons then get some financial stability. Then Maybe they can buy some players.
Personally, I don’t think Barcelona have time to wait a few years.
Changes in football happen very quickly and if you can’t keep up with those changes, then you fall away as a relevant factor.
Top players want to play in clubs that guarantee them trophies and victories, and they can also pay well.
Personally, if I were a top player and I got an offer from Barcelona, a club that can no longer guarantee trophies and money, and Newcastle that will soon be able to guarantee both trophies and money, I know which club I would choose.
It has already happened in football that some clubs that used to be greats and European champions, such as HSV or Nottingham Forest, later fail and become irrelevant.
Barcelona don't have much time to fix their catastrophic financial situation and avoid such a scenario.