I was going to say it is good evidence of the importance of underage teams. But AU don't really have an academy either do they?
Just U20s I think:
Adelaide United Youth Team
Where an Adelaide United Youth Team (AUFC) participates in the Senior Men’s competition the following
requirements will be applied:
(1) AUFC will be required to field a Senior and Reserve Squad in the Football SA Competition.
(2) AUFC is permitted to name a maximum of 36 players based on the following criteria. The Player
must be:
a. Aged 20 years of age or under as of the 31 December of that year.
b. An Australian Player as defined by the A-League (AL) and National Youth League (NYL)
Player Contract Regulations, specifically Clause 5 for both amateur and Contracted NYL
Players and AL Players; and
c. AL Players, Contracted NYL Players, or Amateur NYL Players.
(3) In addition to the 36 players outlined in sub-clause 2, AUFC may seek approval from Football SA, in
its sole and absolute discretion, to register up to six (6) Players to their senior NPL Player Roster
who are older than the eligible youth age bracket prescribed at sub-clause (2)(a) where the
following criteria are satisfied in respect of that Player:
a. The Player must be an Australian Player as defined by A-League contract regulations and
b. The Player must be aged between 21 and 23 years of age as of 31 December of that year.
c. The Player must have appeared in the starting eleven (11) in no more than ten (10)
matches during the most recent A-League season for any A-League Club; and
d. The Player is currently Professionally Contracted to the A-League Club.
(4) Of the six (6) overage players, only three (3) overage players may be listed on a team sheet on
any given round for the first team.
(5) Overage players are not permitted to participate in the Reserve Grade.
(6) Goalkeepers up to the age of 23 will not be considered as an overage player.
(7) Adelaide United will be required to name and submit their player roster to Football SA on an
annual basis by the date specified by Football SA.
(8) In addition to the players named on the Players Roster, Adelaide United are permitted to use the
players that are registered in the National Training Centre (NTC) Team to play in their Reserve or
First Team. The NTC players and eligible Adelaide United FC players will be dual registered with
both the NTC and Adelaide United. Free movement of players between the Adelaide United
teams and NTC Team will be permitted, if age eligible.
(9) AUFC may request, in writing, an alteration to their submitted roster, based on injury or other
exceptional circumstances. Any decision is at the sole and absolute discretion of the Football SA.
(10) All players must be registered in the National Registration System in accordance with clause 60 of
the Football SA Competition Rules and Regulations.
(11) If the AUFC Youth Team is crowned League Premiers, the team is not eligible to represent South
Australia in the Football Australia National Premier League Finals Series. The qualifier will be the
second placed team.
(12) AUFC Youth Team is eligible to participate in a final series that is conducted by Football SA in the
competition in accordance with rule 19.(4) of these regulations.
(13) AUFC Youth Team is eligible to be promoted and/or relegated from any competition in which it
participates.
(14) AUFC will not be eligible to receive prize money.