Delle has not played a single game for Pirates since signing for the Soweto Giants last month.
Coach Micho Sredojevic says Delle is not in contention for a starting berth in the first team at the moment as he is nursing an injury.
Goalkeeper Brilliant Khuzwayo was forced to retire from football after his ankle injury didn’t heal after surgery.
“He played in a bigger league than ours, so it would have been easy for him to adapt. But he is injured. That’s why he will not play for us right now,” Micho told reports.
“He has not recovered fully yet from the injury because he pulled a muscle while training on his own, he tried running and pulled a muscle,” Micho explained to reporters.