It is possible that this could happen, depending on the offer made to Bayern when something fits the why not clause.
Apart from the club, they are clearly business people and the sale of their players is not cheap, just like when Lewandowski was sold and the money was bought for Mane, where Bayern still made a profit, it was not impossible for Musiala either.
Even though the price set by Bayern this time will certainly be a little troublesome for Musiala's interested clubs.
It could surely happen, but surely enough Bayern Munich isn't really wanting to trade Robert Lewandowski back then they want a higher payment for him but Lewandowski wants to be traded and doesn't want to be with Bayern Munich anymore, he really wants to go to Barcelona so badly so the Bayern Munich eventually decided to give Barcelona a much suitable fair trade for Lewandowski because Lewandowski doesn't want to stay anymore, so if Jamal Musiala like Lewandowski doesn't want to stay on Bayern Munich anymore it is highly unlikely that Bayern will trade Musiala for sure, but it will also depend on the players aswell,
Union Berlin's fall was really quicker than I expected. I mean a complete failure by them actually. Because they didn't just lose the lead. They started a long running bad streak in their league matches. I don't know what the reason was for it. Maybe there was some kind of motivation deficiency there. Especially the embarrasing results against Freiburg and Leverkusen must have dropped their morale even more. But they are still lucky that there has been a long break to take a deep breath.
I'm aware that they are normally an average team. But this good start to the season first must have some meaning for them. They can do better than this now. They have the strength to fight for top 4 and a Champions League ticket as a result. They are in the Europa League on one hand of course. But they might be likely to be eliminated by Ajax. If they do then they would completely focus on the Bundesliga.
For me, there is no meaning to their good start, and 1 word to explain all of it was really lucky, they really got lucky at the beginning of the season, and when Bohucm Exposes them that is the start of their fall, Bochum got a win 2 - 1, while the next 1 was Leverkusen that got a 5 - 1 win over Union Berlin, and the start for Leverkusen to get back again, lastly, Freiburg got a better game than Union Berlin with 4 - 1 win that is why on Jan 21 Union Berlin will need to win over Hoffenheim, and pretty much this is a long break for the Bundesliga so there are still a lot of time to practice and get back in shape,