Nagoya Oceans from Japan were the defending champions, but they failed to qualify from the 2016–17 season of Japanese futsal league following their loss to Shriker Osaka for the Japanese champions.
Qualified teams
A total of 14 teams from the 14 of the 47 AFC member associations entered the tournament, which included first-time entrants from Tajikistan. Kyrgyzstan returned after a one-year absence, while Indonesia entered a team for the first time since 2011. From the associations participating in 2016, only Chinese Taipei did not enter the tournament.
For teams entering the tournament, they were assigned a seeding position according to their 2016 AFC Futsal Club Championship ranking for the respective draw and the hosts associations.
The draw was held on 30 May 2017, 15:00 ICT (UTC+7), at the Grand Hotel Saigon in Ho Chi Minh City.[5][6][7] The 14 teams were drawn into two groups of four teams (Groups A and B) and two groups of three teams (Groups C and D), with the representatives from hosts Vietnam automatically assigned to position A1 in the draw. The teams were seeded according to the performances of their association's representatives in the 2016 AFC Futsal Club Championship.
Each team must register a squad of 14 players, minimum two of whom must be goalkeepers (Regulations Articles 30.1 and 30.2).[8]
Match officials
The following referees were chosen for the 2017 AFC Futsal Club Championship.
Referees
Darius Turner
Hussain Ali Al-Bahhar
Liu Jianqiao
Lee Po-fu
Mahmoudreza Nasirloo
Hiroyuki Kobayashi
Tomohiro Kozaki
Nurdin Bukuev
Mohamad Chami
Helday Idang
Rey Ritaga
Kim Jong-hee
Maiket Yuttakon
Azat Hajypolatov
Trương Quốc Dũng
Group stage
The top two teams of each group advance to the quarter-finals.
Tiebreakers
Teams are ranked according to points (3 points for a win, 1 point for a draw, 0 points for a loss), and if tied on points, the following tiebreaking criteria are applied, in the order given, to determine the rankings (Regulations Article 10.5):[8]
Goals scored in head-to-head matches among tied teams;
If more than two teams are tied, and after applying all head-to-head criteria above, a subset of teams are still tied, all head-to-head criteria above are reapplied exclusively to this subset of teams;
Goal difference in all group matches;
Goals scored in all group matches;
Penalty shoot-out if only two teams are tied and they met in the last round of the group;
Disciplinary points (yellow card = 1 point, red card as a result of two yellow cards = 3 points, direct red card = 3 points, yellow card followed by direct red card = 4 points);
In the knockout stage, extra time and penalty shoot-out are used to decide the winner if necessary, except for the third place match where penalty shoot-out (no extra time) is used to decide the winner if necessary (Regulations Articles 14.1 and 15.1).[8]
As per statistical convention in football, matches decided in extra time are counted as wins and losses, while matches decided by penalty shoot-outs are counted as draws.
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