The Bachelorette alum joined ET's Lauren Zima for a special Roses and Rose Live immediately following night one of Brown's finale, where he revealed that he doesn't think the 27-year-old pilot has a shot at the gig.
"I don't think he's going to be the Bachelor," he said. "She's either picking Jed [Wyatt] or Tyler [Cameron]... If Tyler doesn't get picked, how is that man not the Bachelor?"
Haibon called Cameron the "most popular" contestant in Bachelor franchise history, over Dean Unglert and Peter Kraus from Rachel Lindsay's season.
"I think Jed is the person she loves more, but Tyler is the guy she thinks she should pick," Haibon added. "I think she just is in love with Jed, and has been for quite some time."
"My mind would assume if he is in the running for the Bachelor, they would want any baggage to go away... and it hasn't been addressed," he said. "It makes me feel like he's more guilty because of it... maybe he did do something wrong, and he got a phone call [to appear on the show] in October."
Lutes told ET that she and Weber had discussed moving in together and even having kids before he suddenly broke up with her over FaceTime right before Christmas. She said she felt blindsided by him not giving her a heads up he would appear on the show, because he knew she was a fan, and even took her by the Bachelor mansion on a tour.
Haibon joked that if he didn't give his Bachelor fan ex-girlfriend a call before he appeared on Kaitlyn Bristowe's season of The Bachelorette in 2015, he "wouldn't be here." "I would be dead!" he cracked.
Monday's episode of The Bachelorette concluded with Brown assuring fans that questions would be answered, seemingly alluding to Wyatt's girlfriend drama. His ex-girlfriend, Haley Stevens, claimed to ET last month that they were in a relationship when he went off to film the show.
"It would take a lot for me to believe Jed at this point," Haibon noted.
Brown's season finale continues Tuesday at 8 p.m. ET/PT on ABC. ET's live Bachelorette finale coverage starts at 10:05 p.m. ET / 7:05 p.m. PT on ET Live, which you can stream on your Roku, Apple TV or Amazon Fire TV device.