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General Director of Bayern Munich Dresen was crystal clear about the possible transfers of Olise and Diaz. He said Bayern wouldn't be foolish enough to sell Diaz to Al-Hilal. And regarding Olise, it's the same very clear, he's staying with the team. They're not considering any other options for him, no matter the cost. Therefore, Bayern will remain with its current starting lineup, and I think that was expected.
Different transfer period, same talk

It is the same every year and it will be the same forever. You know, the transfer period in Germany is open till September 1st and the biggest transfers, those that involve buying players with already good contracts, usually don't happen within the first few weeks of those transfer windows. It is playing poker on both sides, one side says no chance, the other side says this is our final offer, and then you will see how out of a sudden rumours pop up everywhere and everything changes.
Diaz going to Al-Hilal is highly unlikely because I think he wouldn't want to just yet. He made the impression that is 120% motivated to achieve big things with Bayern. Now money can change everything, but since he is 29 now and could still go to Saudi Arabia in two or three years, I think his focus is on giving the Champions League another shot.
Olise, nothing is impossible. He would harm his reputation if he decided to go for a boycott or pretend injuries, but if Real Madrid makes an offer that breaks all records, Bayern officials will be discussing behind closed door for sure