Even though South China crushed Global 6-1 on February 25, Gomez is uncertain whether they can repeat that performance this time around.
"We have quite a lot players injured at this moment, but we still aim to win the match," he told the official AFC site. "We will also play a few young players in tomorrow’s game so they can gain more experience and improve their match condition and fitness."
Meanwhile, Global coach Dan Padernal revealed that his side are brimming with confidence after they beat Yadanarbon 4-1 on April 15 to win their first-ever AFC Cup match.
To make things better, if Global were to beat South China on Wednesday, they could progress to the next round when they face Pahang in a winner-takes-all match on May 13.
"The team is in good condition and we don’t have any injuries," Padernal said. "The training has been good and we are ready to play to get the three points.
"We have prepared well for the match against South China and have highlighted what we need to do. We will perform much better tomorrow; I have confidence in my players."