The performer made the X Factor quarter finals in 2012 with the group, the same year that Bit On The Side host Rylan Clark-Neal appeared on the singing series.
Rumour had it that Jaymi was being lined up for last year's series but now reports have claimed he'll instead be appearing on this year's show.
According to the Daily Mirror newspaper, show bosses are already in talks to get Jaymi on the summer run later in 2017.
“Jaymi is in talks to take part in the next series of Celebrity Big Brother during the summer,” a source told the newspaper.
They added: “Out of Union J Jaymi has the best personality and has a real talent for TV.”
Despite the January series of CBB still being on air there are already plenty of rumours about the next show.
Reports have claimed that show bosses are working on a 'Summer Legends' theme which will again see former housemates welcomed back into the house.
This summer's CBB will be a particularly special one with the show celebrating its 20th series on TV.
“They’ve seen this series as a bit of a trial but the formula has worked well with viewers,” a source told The Sun . “They’re upping the budget for guests too to make it the best out of the 20 series.”
Of course with the summer Celebrity Big Brother still AGES away, plans may well change.
We've still got the regular 'civilian' series to come first, which is also set to undergo a revamp.
Auditions for the new series of Big Brother are asking for PAIRS - whether it be couples, siblings or BFFs - to apply for the special run.
For now, Celebrity Big Brother's All Stars v New Stars continues nightly on Channel 5. The final has been revealed as Friday, February 3.