On 7 August 2014, Tamuz scored the last goal of an eventual 4–1 win against Viktoria Plzeň, in the Europa League third qualifying round second leg. Tamuz also scored against Dinamo Zagreb in the first leg of the play-off, but Petrolul lost the match 1–3. After a good season debut with Petrolul, he was called up to the Israel national team to play in the UEFA Euro 2016 qualifiers. On 21 September, Tamuz scored a doppietta against Steaua București, but unfortunately, Petrolul lost the match 2–3.