Sim recently had his contract terminated by the Mariners as Tony Walmsley goes about rejuvenating his squad, but immediately began training with A-League leaders Western Sydney.
Sim joined the Mariners from NSW NPL club Manly United and immediately showed how dangerous he could be with his direct running and eye for a goal.
He will join the Wanderers for the rest of this season.
“I’ve been training here since I left the Mariners and when Popa gave me the news that I would sign I was so pleased to be part of this club that is doing great things on and off the field,” Sim said.
“It’s a big privilege to be here and I can’t wait to get started. Within the first few years of set-up the Wanderers have been incredibly successful, they’re a club that’s here to win things and that’s an incredible thing to be a part of.
“I went to the game on Friday night and sat in the crowd for the first time: the atmosphere was incredible. The RBB live and breathe off everything the boys do, they don’t stop singing the whole match and that kind of support helps players even more. They’re a big part of this club and I can’t wait to play in front of them.”
Bandiera, who played every minute of Australia's under-17 World Cup campaign late last year, has signed a two year deal with Western Sydney.