What Xavi was worried about seems to have happened. He spoke the truth but his words actually infuriated his boss and got him fired because of it.
Now Barcelona must find a way to get fresh funds and I think it wouldn't be strange if in the near time, there will be some players who may be sold to solve that problem. There have even been rumors that De Jong has been linked with Man United again.
Fresh funds or you mean fresh loan, isn't like there is an assurance like if they sign Danny Olmo they are going to win the Laliga but a adjustment of the players to fit into where they lack and even with that, Flick can manipulate his formation and get things right unless he is worst than Xavi they should have maintained for the Job. It was this same frustration funds and the club owners been too pocket tight that made him left the club for where they are right now.
Barcelona hasn't won any recognized Europa League trophy as of recent and that means there is nothing to show as working to get fresh loans since tbe previous once are not yet settled. They will have to just manage these set of players until the half way of the season before they can sign more players in the next phase of market transfer which is going to be around January again.