Early years / Universitatea Cluj Calcan started playing football in his hometown as a youngster for CSS Slatina under the command of Ion Pârvulescu, the coach who previously discovered two other significant Romanian players–
Ionel Dănciulescu and
Claudiu Niculescu. When he was fourteen he moved to Ardealul Cluj of
Cluj-Napoca and in 2010 he joined
FC Universitatea Cluj together with twelve other teammates. On 23 August 2013, Calcan made his debut in
Liga I, the Romanian top football league, in a 6–0 away loss against
FC Dinamo București.
Willem II On 22 July 2016, Calcan moved abroad for the first time to sign a two-year contract with Dutch side
Willem II.
Cherno More On 14 February, Calcan joined
Cherno More for the spring of the 2023–24 season, first starting mainly as a substitute, but by the end of the season he became a starter, playing a total of 14 matches, 8 matches as a starter and 6 as a substitute. He also scored 2 goals against
Ludogorets and
Levski respectively in 4–0 and 3–1 wins, and one assist in a 3–0 win over Lokomotiv Sofia. The following season, he started 4 matches as a starter and 2 as a substitute, scoring one goal against
Hapoel Beer Sheva in the 2nd match of the 2nd qualifying round of the
Conference League, but the sailors lost 1–2. Before a match with Botev Vratsa, he tore
cruciate ligaments and his season ended. He returned to Cherno More's group in a 2–0 win over
Dobrudzha, returning to the field against
Montana in a 1–3 win, entering in the last minute. ==Career statistics==