Wayne Rooney's son Kai signs for Manchester United

Rooney senior joined United from Everton in 2004 and became the club's record goalscorer, netting 253 times in 559 appearances over 13 years at Old Trafford.

Wayne Rooney with his wife Colleen and 11-year-old son Kai.   -  Twitter/Wayne Rooney

Wayne Rooney's son, Kai, has signed for Manchester United, the former United and England striker said on Thursday.

The 35-year-old Rooney posted a picture on Instagram alongside his wife Colleen and 11-year-old Kai, who held up a United No. 10 shirt - the number his dad wore for the Premier League club - with his name on the back.

"Proud day. Kai signing for Manchester United. Keep up the hard work son," Wayne Rooney said.

Rooney senior joined United from Everton in 2004 and became the club's record goalscorer, netting 253 times in 559 appearances over 13 years at Old Trafford before re-joining Everton.

Also England's all-time leading scorer, Rooney moved to Major League Soccer side DC United in 2018 before joining English Championship club Derby County as player-coach in January this year.