Career
He began his career in the Real Madrid youth team, before moving to Atlético Madrid where he played for the B and C teams. Between 2006 and 2012, he played in the Segunda División B for Atlético Madrid B, San Fernando, Puertollano, Lorca Atlético, Almeria B (loan) and Conquense. In July 2013, he was on trial at Barnet in the Conference Premier, with compatriot Luisma Villa.
Both players had their signings confirmed on 3 August 2013.
Casabella played frequently at the start of the season, but struggled with injuries from October onwards. After 12 appearances in all competitions, all but one in the league, he was released on 14 April 2014.
After leaving the Bees, Casabella joined Thunder Bay Chill of the USL Premier Development League. In August 2014, he re-joined San Fernando.
In June 2015, Casabella signed for Armenian Premier League side Football Club Ararat Yerevan.
Less than a month later, without playing a game for Ararat Yerevan, Casabella moved back to Spain, signing for Rayo Cantabria.