for now, barcelona is one of the clubs with the best squad in the world so if they intend to buy players again, it's just a waste. What Xavi has to do right now is focus on making the current squad work very effectively. they must be able to at least win a domestic trophy in the following season and the UCL is one of the trophies that Barcelona must target.
Barcelona has been very good in the league so far, they have done a very good job in the league this season, from a performance point of view we think this is good enough, and of course they have to focus on forming a squad that is much more in advance, wanting to win the UCL can be said to be a target of all clubs, if they can show a better performance to win the UCL they must be prepared and arrange as well, considering that the rivals they will face are very tough and consistent in controlling their club's performance.
Barcelona's goal now is to win La Liga this year, as they won La Liga last year. Another target will be UCL, but we should not expect much hope from Barcelona in the Champions League. Who will they transfer during this transfer window? My guess is that they can close the transfer season with a few transfers.