FIBA Asia 2021 qualification starts in Nov 2019 (6 games, 3 windows 'Nov2019, Feb2020, Nov2020').

12 teams from west and central Asia will be divided in 4 groups and the top 2 from each qualify directly while the 3rd play against 3rds from the other group... , according to the fiba ranking the pots should be as following (same applies for east Asia and Oceania, 12 teams divided into 4 groups etc..):

Pot 1
Lebanon
Iran
Jordan

Pot 2
Qatar
India
Khazakhstan

Pot 3
Iraq
Syria
Palestine

Pot 4
Saudi Arabia
Bahrain
Sri Lanka