[2] Mățan made his first appearance in European competitions on 12 July 2018, starting in a 2–0 away win over Luxembourgish team Racing FC in the first qualifying round of the UEFA Europa League.
He subsequently participated in five of the following six games, starting all of them, which included both legs of his team's 7–5 aggregate loss to Gent in the second qualifying round of the Europa League.
[5][6] He made his Major League Soccer debut on 18 April, coming on as an 88th-minute substitute for Pedro Santos in a goalless draw with Philadelphia Union.
On 23 December 2022, it was announced that Mățan's loan ended, with the player having made only six appearances due to a stress fracture suffered on his toe.
A diminutive playmaker, Mățan is typically deployed as an attacking midfielder, although he occasionally takes on the role of a left winger.