I have 2 theories.
1. Kid and a group of SN will team up and defeat BM with Kid being the one to get the final hit and most of the limelight. Kid, Killer, Hawkins and Urogue.
2. A marine admiral (Greenbull or Kizaru) will come with a bunch of VA’s and they will team up and defeat BM, Obviously the Admiral will win the fight with only minor injuries due to him having back up.
3. Luffy defeats BM in Elbalf in a 1 v 1 fight. This will be Luffy final fight before his long awaited fight against BB.
1. Kid and a group of SN will team up and defeat BM with Kid being the one to get the final hit and most of the limelight. Kid, Killer, Hawkins and Urogue.
2. A marine admiral (Greenbull or Kizaru) will come with a bunch of VA’s and they will team up and defeat BM, Obviously the Admiral will win the fight with only minor injuries due to him having back up.
3. Luffy defeats BM in Elbalf in a 1 v 1 fight. This will be Luffy final fight before his long awaited fight against BB.