Tottenham avenged their 1-0 Premier League loss to Leicester a week ago by beating the Foxes at the King Power Stadium on Wednesday evening, coasting to a 2-0 victory in the FA Cup.
It was forward Son who gave Tottenham the lead, smashing home an outstanding goal from the right hand side, before he supplied Nacer Chadli with a slide-rule pass in the second half, with the Belgian wrapping up the win.
That sends Tottenham into the next round of the FA Cup, handing them a trip to face League One Colchester United, but much of the focus tonight is on Son.
The summer signing from Bayer Leverkusen enjoyed a superb start to life at White Hart Lane, but has faded since picking up a foot injury in September.
Reduced to a substitute role ever since, Son made a real claim for a place in Mauricio Pochettino's starting line-up to face Crystal Palace this weekend by terrorising the Leicester defence throughout on Wednesday.
After the game, former Spurs midfielder and current pundit Jermaine Jenas told BBC that he felt Son was Tottenham's best player, and noted that his awareness in the final third was 'exceptional'.
"He was really the bright spark for Spurs," said Jenas. "A lot of their play was quite pedestrian and easy for them at times, but every time they got it into Son, something happened or the game came alive. He's always looking forward and his whole awareness in and around the box was exceptional," he added.
Should Son start for Spurs against Palace?