For now, Munich is not in a rush to find a replacement and some sources say Thomas Muller's contract will be extended to take over Musiala role, this decision will be taken at least until the middle of the season if all is well then Munich will only focus on Musiala recovery on the other hand, if Muller is unable to take over, it is possible that new players will be brought in. Yeah, it is a shame that this incident has hampered Munich plans for next season and Jamal Musiala has a risk to his career.
If Bayern Munich insists on finding a new player for the AM position, who would be the right player? I searched the list of players on transfermarkt and found some names: Xavi Simons (Leipzig) Oihan Sancet (Athletic) and Morgan Gibbs-White (Nottingham Forest) assuming these clubs need money then it is possible they will let go.
They may not be in rush for it, but Musiala, even though he is great, keeps getting injured. Every season he misses 10+ games, and this season he will miss even more because of the grotesque injury. I am suspecting that they are not going to do that much, it is going to be a bit weird for them to keep him if he keeps being this much injured all the time. Players who are so injury prone ends up getting sent away eventually, no matter how great you are, you are not going to keep staying at a big club.
This means we are going to see Musiala eventually sold, but that will be an issue too because when he plays he is one of the best, but he is an injury risk, so how much does he really worth? When he plays, he is 100+ million worth, but he doesn't play all games. So, it's a big question.