[2] On 23 April 2017, a day after his 16th birthday, Minchev was given his professional debut by manager Georgi Ivanov in a 3–2 league victory over Lokomotiv Plovdiv, replacing Ivan Kokonov in the 76th minute.

[4] In the beginning of June 2017 he spent five days on trial at Serie A club Torino, where he trained with the U17 team and took part in one friendly match, scoring a hat-trick.

On 19 September 2017, Minchev made his debut for Bulgaria U17 in a friendly against Turkey U17, scoring the second consolation goal in a 2–5 home defeat.

[11] After a good run of form with Cherno More, on 11 March 2019 Minchev was called up by manager Petar Hubchev to the Bulgaria squad for the UEFA Euro 2020 qualifying matches against Montenegro and Kosovo.

[12] He made his first senior appearance for Bulgaria in a 1–1 home draw against Montenegro on 22 March at the Vasil Levski National Stadium, coming on as a substitute for Spas Delev in the 82nd minute.