Coach Dan McKellar on Wednesday promoted Bowen for his first start of the season against the Fijian Drua on Saturday before revealing the 22-year-old and fellow flyhalves Jack Debreczeni and Lawson Creighton were all off contract at the end of the Waratahs' 2026 campaign.
"It'll come down to performance and it's a great opportunity for a number of boys," McKellar said.
"It always comes down to performance. There's no doubt. So for some of them, they had to be patient to wait for the opportunity to play."
Bowen is among eight new starters as McKellar felt compelled to "freshen the side up" after last week's dispiriting 31-26 loss to the Highlanders in Dunedin.
Debreczeni and exciting young goalkicking winger Sid Harvey were the two biggest casualties, while halfback Jake Gordon was rested and winger Andrew Kellaway (concussion), back-rower Pete Samu (knee) and hookers Ethan Dobbins (foot) and Folau Faingaa (knee) were ruled out with injury.
Asked if Bowen had a future at the Waratahs, McKellar said: "They're all things to be discussed in the future.
"He's got an opportunity now over the next couple of weeks to push his claim and they're discussions that are ongoing in the background.
"He's a really good young rugby player who needs more rugby. Jack just needs to play 80 minutes at the highest level that he possibly can and learn his craft skill-set wise, kicking game, catch pass, vision, seeing the picture.
"His game management is something that we've worked hard on him with since we've been in the building."
Three defeats in a row have left the Tahs needing to post a rare win in Fiji and also likely needing to beat the ACT Brumbies at home and the Western Force in Perth in their last three regular-season games to make the finals.
McKellar never expected his Wallabies-laded line-up to miss the finals last year, in his first season in charge, let alone again in 2026.
"It's not about making up the numbers, that's for sure," he said.
"I knew it was going to take time and we needed to be patient but, I'm not going to lie, it's been frustrating.
"We're just chasing a consistent 80-minute performance. Not 10 minutes here, 10 minutes there.
"On the weekend it was our (poor) start. You can't be down 28-7 in New Zealand against the Highlanders."
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