Currently the transfer window is still open, every club is still free to recruit the players they need to improve their performance next season, Bayern Munich may not want to lose out on purchasing players this season, they want to dominate their own league again and also compete in the Champions League as well as several clubs. Serie A they buy players from other leagues, especially competitive leagues, so it will make the competition next season even more interesting because there are several new players who will fill these top clubs. I can't wait for it.
Talking about Juventus, this club is trying to improve their performance slowly before the season starts. Juventus has prepared several new players that they recruited. Juventus needs an effective attack line so that next season they can compete strongly with Inter Milan, who were their competitors in the title race last season, but lost in the competition because Inter Milan appeared consistent. Therefore the club nicknamed the old lady cannot just give up from Inter Milan, they must show their glory again next season.
I would assume that if they keep the summer period as active as thus far, then I can see them doing quite well into the season. So far all I see are rumours by the way, but even if half of these rumours are true then the yare going to be quite fine. Of course they are going to be forced with the monetary part, I feel like selling Vlahovic would solve all of their financial issues and I do not think that they are going to be that bad without him, they can replace him and I think they should. That way they would have a ton of money, and replace many positions and do a lot better.
This of course is not always that easy, we should consider the fact that we are going to end up with a much better team overall instead of just one great player.