I know it’s bit too early but I went ahead and picked my team, and this time I decided to diversify my player’s as picking all from Bayern Munich didn’t work for me last time. Furthermore I was keen to choose Sancho, but then I decided to drop him because of his poor form in this season, and rest player’s are easy to understand why I picked them. Lastly I was bit confused for the striker, so ended up picking Lukaku, but which other striker would you'll recommend me to pick for the next round?.
Source:
https://www.dailymail.co.uk/sport/football/article-8886693/Jadon-Sanchos-poor-form-Manchester-United-according-Dortmund-boss.html
Secondly I love mbappe and messi there, they are definitely looking like they are going to be great, I wouldn't change them, if neymar was around I would have add neymar instead of Ansu but I guess neymar won't be around for a bit more while with injury, which means Ansu could be decent, Coman could be great too but you said you do not want full Bayern squad and I already suggested Lewa so if you do not want Coman I think Ansu is fine.