Rooney, who can play as a striker or winger, showed his skills by beating his marker and scoring a goal that took a deflection off a team-mate.
Kai has been a part of Manchester United's youth academy since he was 11 years old and has also been called up to the Under-19s squad for a tournament in Croatia.
His father Wayne Rooney made his debut in the first team at Everton at the age of 16 and went on to become Manchester United's record scorer with 253 goals.
