They claim the ex-football star turned pundit is hugely endowed after seeing him during training for Soccer Aid.
Olly and Towie hunk Mark also shared an ice bath where they caught a glimpse.
Pop star Olly, 34, said: “He has an absolute schlong.”
The trio are team-mates in the England squad taking on a World XI including sprint legend Usain Bolt and coached by Jamie’s dad – former top manager Harry Redknapp.
ITV will broadcast the Unicef children’s charity match at Manchester United’s Old Trafford stadium from 6.30pm tomorrow.
To donate, visit socceraid.org.uk
Jamie and Louise Redknapp officially ended their 19-year marriage last year.
Louise has revealed she’s determined not to “lose her spark” as she embarks on her new single life, and shared a quote on Instagram that read: “It’s OK if you fall down and lose your spark.”
The ex-Liverpool star has now bagged himself mum-of-one model Julia Restoin Roitfeld, according to The Mail.
The 37-year-old is the daughter of former Vogue Editor-in-Chief Carine Roitfeld.
She is also and art director and founder of maternity website Romy and the Bunnies, which offers “inspiration for the modern mother”.