	On 8 July 2016, Casado signed for Real Zaragoza also in the second tier. On 6 July of the following year, he moved abroad for the first time in his career after agreeing to a contract with Superleague Greece club Xanthi FC. He made his debut for the latter in the season opener, a 0–0 home draw against PAS Lamia 1964; his first goal in the competition came on 29 April 2018, when he helped the hosts defeat Athlitiki Enosi Larissa F.C. 1–0.