At 15 years and 89 days, Gianluca Busio became the second-youngest player all-time to sign an MLS contract when he joined Sporting KC in August 2017. Busio earned his club debut at 16 years and nine days old, playing the full 90 minutes in a 2-0 U.S. Open Cup win at Real Salt Lake, before landing his MLS debut against FC Dallas on July 28. In a 1-0 win over the Houston Dynamo on Aug. 4, Busio became the third-youngest player to start a match in league history and the second-youngest to record an assist at 16 years and 68 days, setting up Diego Rubio's goal in the 74th minute. In a 4-1 victory at Vancouver Whitecaps FC on Oct. 17, Busio became the second-youngest goal scorer in MLS history.
2019: MLS regular season: Has not featured. Concacaf Champions League: Has not featured. Open Cup: Has not featured. MLS Cup Playoffs: Has not featured.
2018: MLS regular season: Started one of seven appearances, recording one goal and one assist (153 minutes played). Earned his MLS debut as a second-half substitute against FC Dallas on July 28, becoming the youngest player in Sporting KC history to feature in an MLS match at 16 years and 61 days. In a 1-0 win over the Houston Dynamo on Aug. 4, Busio became the third-youngest player to start a match in league history and the second-youngest to record an assist at 16 years and 68 days, setting up Diego Rubio's goal in the 74th minute. Came off the bench in the second half to score in the 94th minute of a 4-1 victory at Vancouver Whitecaps FC on Oct. 17, becoming the second-youngest goal scorer in MLS history. Open Cup: Started and played 90 minutes in a 2-0 fourth-round win over Real Salt Lake on June 6, becoming the youngest player in Sporting KC history to feature in a competitive match at 16 years and nine days. MLS Cup Playoffs: Did not feature.
2017: MLS regular season: Did not feature.
Busio starred for the Sporting Kansas City Academy during the 2016-17 season as one of the United States’ top youth prospects for his age. The versatile forward played three matches for the Sporting KC U-14s before stepping up to the U-16 level, where he scored nine goals in the U.S. Soccer Development Academy and earned Central Conference Best XI honors.
At the international level, Busio has blossomed as a key contributor for the United States U-15 Boys’ National Team. He guided the U.S. to a second-place finish at the CONCACAF U-15 Championship in Bradenton, Florida, scoring a team-high five goals in five matches. He previously represented the U.S. U-15s in May at the Torneo Delle Nazioni in Italy, where he scored three goals as the Americans were crowned tournament champions.
Busio also earned playing time for the Sporting KC U-18s throughout 2016-17 — scoring in their regular season finale on June 3, 2017 — before leading the U-16s to their first appearance in the Development Academy quarterfinals. He tallied three goals during Sporting KC’s impressive postseason run from late June to mid-July.
Busio broke into the U.S. U-15 player pool in 2015 and helped the team win the 2016 International Festival of Futbol title last April in Rosario, Argentina. Two months later, he made three appearances for the U-15 BNT at an international tournament in Zagreb, Croatia.