 He made his debut with the club on 19 August, starting and playing the full 90 minutes of a 1–1 home draw against Atlético Madrid.Karabelas appeared in only nine matches during the campaign, with the Valencian side achieving a comfortable mid-table finish.In his second season with the "Granotes", he was the most used left-back by manager Joaquín Caparrós, overtaking veteran Juanfran, and signed a new two-year deal on 20 March 2014.