[5] In February 2014, he was part of the first-team squad for the league match against Rapid Wien, without having previously played for the reserves.

[6] In March 2014, he finally made his debut for Austria Wien II against the reserves of SV Mattersburg in the Austrian Regionalliga, conceding five goals in a 5–0 loss.

[8] On 6 July 2015, Casali joined Floridsdorfer AC on a season-long loan as part of a cooperation agreement with Austria Wien.

[10] After eight second division games for Floridsdorf, he returned to Austria Wien prematurely in October 2015 after regular goalkeeper Robert Almer was injured.

[8] On 22 July 2017, Casali signed a two-year contract with SV Mattersburg after having failed at making his breakthrough with Austria Wien.

[8][2] In April 2019, he finally made his debut in the Austrian Football Bundesliga when he was in the starting lineup on matchday 25 of the 2018–19 season against Rapid Wien.