Koumantarakis scored his first domestic league goal for his new club on 5 August in the away game in the Charmilles Stadium, Geneva as Basel played a 1–1 draw against Servette.
Koumantarakis marked his first league goal at home in a match against Servette on 5 August, as Basel played to a 1–1 draw in the Charmilles Stadium, Geneva.