Several Sydney FC players, including skipper Alex Wilkinson, have been hit by sickness after arriving in China for the friendly with French giants PSG.
The Sky Blues arrived in China on Saturday evening but several of them have caught a bug, including captain and centre half Alex Wilkinson, left back Michael Zullo, young defender Patrick Flottmann, midfielder Brandon O'Neill and a couple of staff members.
Sydney arrived too late in the day to to see PSG play out a 1-1 draw with Inter Milan, who won the game on penalties.
The Sky Blues' match on Tuesday evening will be PSG's last pre-season hit-out and they could finally field Brazilian superstar Neymar, who didn't take part in their three previous warm-ups.
New Sydney striker Kosta Barbarouses pointed out PSG had multiple attacking threats apart form Neymar in Kylian Mbappe, Edinson Cavani and Julian Draxler.
"As a striker, it will be really interesting to see how they go about their jobs,'" Barbarouses told AAP.
The former Melbourne Victory forward is building a new striking partnership at the Sky Blues with English marksman Adam Le Fondre.
"Alfie (Le Fondre) had a really good year last year. We're going to work hard for each other and hopefully complement each other," Barbarouses said.
Sydney will start a big underdog but the Sky Blues relish the challenge.
"We're very excited about it. It's going to be a tough challenge but you don't often get an opportunity to play against one of the best teams in the world," Barbarouses said.