At the final whistle, Son had souvenired after his wonder goal in the 5-0 romp. Mourinho later likened the effort to Ronaldo's famous individual goal for Barcelona.
However, the Spurs manager asked Son to give up the ball to 17 year-old striker Troy Parrott, who had made his Premier League debut on the day.
Son obliged and Mourinho later said, "It was his debut and I think the match ball is more important for a boy who played against kids in the UEFA Youth League last week.
"Now he is playing in the Premier League at the age of seventeen."