He began playing soccer with in the Vaughan Azzurri youth system.[2] In February 2015, at age 12, he joined the Toronto FC Academy.[3]Terry Dunfield, who became his coach at U14 level, immediately was impressed with his performance both on and off the field, selecting him to be team captain.[4] As part of the TFC Academy, he helped them to the 2019 U16 Dallas Cup and was named to the 2019-20 Generation Adidas Best XI.[5]
Rather than attend a school with an agreement with the Toronto FC Academy, Thompson chose to remain at his current school,[6] attending Ursula Franklin Academy.[7] In 2020, he signed a national letter of intent to attend Oregon State University and play for the Beavers men's soccer team for the 2021 season.[8] However, he ultimately did not join Oregon State, turning professional instead.
Club career
On May 13, 2021, he signed his first professional contract with Toronto FC II of USL League One to join the team for the 2021 season.[3] He made his debut for Toronto FC II on May 22, 2021 against North Texas SC.[9] He scored his first professional goal on June 2 against Union Omaha.[10]
After impressing during 2022 preseason,[11] he signed a contract with the first team Toronto FC.[12] He made his first appearance for TFC as a late-game substitution against the Columbus Crew, on March 12, 2022.[13] He started his first match on April 2 against New York City FC.[14][15] He scored his first goal on April 9 against Real Salt Lake.[16] In 2023, he was loaned to the second team for some matches.[17] In 2023, he began to be deployed as a right back, after having been a midfielder and attacker throughout his career, and in 2024 spent some time as a centre-back.[18]
In August 2023, Thompson was loaned to Lillestrøm of the Eliteserien for the rest of the season, with an option of a permanent transfer.[19] He made his debut on September 3 against Aalesund.[20] The club declined the purchase option after the season.[21]
