The launch night is just two weeks away but it's been reported that Noel is in "last minute" talks to join the show.
A source told the Daily Star: "It's been a while since Noel has been in the spotlight so fans will be interested to see what's he's like now."
Noel rose to fame in Hear'Say with Kym Marsh, Suzanne Shaw, Danny Foster and Myleene Klass after being created on reality show Popstars in 2001.
Kym left in January 2002 and was replaced by Johnny Shentall, but the group split for good in October 2002.
Noel is still good friends with his former bandmates, and last year he was seen cheering on Suzanne Shaw as she competed in Dancing On Ice.
Noel, who is currently starring in the Dirty Rotten Scoundrels musical theatre show alongside former Hollyoaks actress Carley Stenson, released a debut solo album titled Here I Go Again in November 2014.
The new series of CBB, which returns with a UK vs. USA theme, launches on Thursday 27 August 2015.
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