Complex sentence: His first start occurred against Ergotelis FC, his two mistakes resulting in both of the opposition's goals in an eventual 2--2 away draw; after failing to perform overall, player and club agreed to mutually terminate the player's contract on 26 May 2015.
Split into simpler sentences: His first start occurred against Ergotelis FC, his two mistakes resulting in both of the opposition's goals in an eventual 2--2 away draw. After failing to perform overall, Catalá and club agreed to mutually terminate the player's contract on 26 May 2015.