The news was accidentally revealed through a social media post on Gabriel’s Instagram account, who has also signed a contract with United.
“Delighted to finally have my signing day done much better to have mine with teammates @cristiano JR,” Gabriel wrote in a post that has over 17,000 likes.
In a Netflix documentary centred on his partner Georgina Rodriguez, Ronaldo previously spoke about his son’s natural abilities.
“Only time will tell. I will never pressure him. He will do what he wants.
“Also what I want the most for Cristianito and everyone else is that they’re happy and that they choose what they want. I will support in any way.”
On Instagram, Rodriguez also posted pictures with Ronaldo Jr. and their family, with the caption in Spanish translated to read: “Pursuing our dreams together. Mom loves you!”
Unsurprisingly, the youngster has followed in his father’s footsteps by selecting the famous No 7 shirt, and he is set to join join United’s U12 side – which also has Nemanja Matic’s son.
Ronaldo Jr. previously showcased his talents for the Juventus youth sides, and around that time his father said: “I hope that Cris, my son, can be like his dad. He says he is going to be better [than me], but I think it’s difficult. He is playing for Juventus and adapting really well, it has been easier for him than for me.”