WATCH: Philadelphia Union wonderkid, future Manchester City prospect Cavan Sullivan scores long-range banger in MLS Next Pro playoffs

In the 41st minute of the Union II's Eastern Conference Final, Cavan Sullivan received the ball 40 yards from goal, with space to run into. The 15-year-old took two touches - one to get the ball out of his feet, a second to knock it forward - before bashing the ball up and over a helpless goalkeeper.

The strike was the second in a 4-0 rout for the Union II over Columbus. Sullivan has played a crucial role for his MLSNext Proside throughout the campaign, tallying nine goal contributions in less than 1400 minutes - averaging a goal involvement every 150 minutes.

Sullivan made his first MLS appearance in July, becoming the youngest debutant in major U.S. sports history in the process. He was youngest player to ever play in the league by smashing Freddy Adu's youth age record.

“It was like… I've never been on the field with noise like that,” Sullivan told GOAL earlier this summer. "Obviously, I've been to European Games where the stands are cool and all, but especially hearing it ... it was pretty cool. And having my name being the chant was even better.”

The teenager will likely feature for the Union II in the MLS Next Pro final when they take on North Texas SC on Nov. 9. Sullivan's future lies overseas, though, with Man City agreeing a deal to sign the teenager once he turns 18.