The six-year-old has been attending
training sessions for the Red Devils’ youth team for a number of weeks.
Dad Wayne , 30, has been taking him alongside teammate Michael Carrick whose son Jacey is also playing for United’s youngsters.
The sessions takes place at the club’s old Cliff training ground in Salford, Gtr Manchester, and sees around 25 youngsters playing for the development squad.
Kai’s mum Coleen, 30, has also helped taking him to practice when Wayne is away playing football in the week.
And last week while dad was away on international duty teammate Carrick, 35, chipped in by taking his son and Kai to training.
A source said: “Wayne and Michael really get into it when they bring their their boys down.
“The kids seem to love it and have been coming down regularly in the week to train with the young development squad.
“It’s a bit funny because both their dads aren’t playing as much any more but these guys could be the club’s stars of the future.”
Kai has previously shown an interest in his dad’s game and has been spotted wearing a Jamie Vardy football shirt as well as a Cristiano Ronaldo transfer on his arm.
Last year he came on to the pitch after United’s last home game against Arsenal
– a 1-1 draw – to kick a ball around the surface.
But for his birthday last November mum and dad – who now have three kids – had a mini golf course installed at their home for their eldest.
He was pictured striking balls around the course which would have cost around £7,000 to create.
Dad Wayne has even taken his son for golf lessons to brush up on his ball-striking.
Manchester United’s youth development side is made up of top local talent from the scouting of clubs and also by invitation.
Players are not contracted to United but are trained and filtered for the club’s older age groups.
Youngsters joining United sign schoolboy forms when they are aged 10 or 11. If they are successful they are offered professional deals at the age of 16.