on 26 july 2012, tonev scored his first ever european goal, netting the only goal in a 1–0 home victory over azerbaijani club khazar lankaran in the second qualifying round of europa league. on 25 august, tonev netted his first ekstraklasa goal of the 2012–13 season as he scored a 25-yard winning strike in a 2–1 away victory over polonia warsaw.