Buble and his Argentinian wife Luisana Lopilato are due to welcome their first son in August with hopes of the child becoming a professional footballer.
"I used to play soccer when I was younger so I'd be thrilled if he grew up to be a footballer," The Sun quotes Buble as saying. "And who's better than Becks?
"It's my wife's dream as well. She called yesterday to say she felt the baby kick for the first time. She thinks he's got a future with her favourite team, Club Atletico River Plate in Buenos Aires."
Meanwhile, Beckham has been speaking about his own family, claiming that his four children are allowed to do what they want "99%" of the time.