IND are actually hosting Asia Cup 2018 (Sep 13 - Sep 28) in UAE. While BAN, IND, PAK, SL & AFG directly qualify, the 6th team will be any of Hong Kong, Singapore, Oman, Nepal, UAE or Malaysia.
Since it's an ODI battle, BAN should qualify from group stage.
Ref:
https://www.icc-cricket.com/news/661607