Coach John Kosmina had said earlier in the week that the 20-year-old could feature on the bench for the A-League opener against Melbourne Victory.

However, club officials confirmed the youngster had hurt his knee during a match and wouldn't feature in the squad to face Victory.

Hett had made a big impression in his time training with the first team since winning the competition and was also expected to be a big part of the club's National Youth League side.

A club spokesman said: "Adam hurt his knee in a match."