You are right I also think they are having a financial set back because the AC Milan I know would have bought some good players knowing fully well they are not performing well instead they even sold Tijjani Reijnders one of there best players to Manchester city, so I'm very sure they are having some financial issues, they will not perform well this season infact there Last seasons performance may even be better than this season because I'm not seeing any hope of good performance for AC Milan.
The only hope for AC Milan right now is for them to develop a very good strategy and the coach should use them very well they can also look into there Academy if they can see young players that are doing very well just like Barcelona always do, you never can tell that might be there savior since they are facing financial challenges.
If there are financial problems, it is not possible for a team to perform well. At the moment, I understand from the outside that AC Milan needs changes in several places and needs some good quality players, but due to financial problems, AC Milan is not able to bring players in all those places, which is why AC Milan has to start the season with relative weakness. Those in the team may be trying their best, but the teams they have as opponents have formed better teams than AC Milan and are competing, so it is quite difficult to actually do well when competing against all those teams. I was more disappointed with AC Milan's performance last season, where in other seasons we have always seen AC Milan in second place in the points table, but last season AC Milan's position was much lower in the points table.