On 17 November 2017, Papadopoulos scored the opener and the clincher for the Brisbane Roar as they climbed off the bottom of the ladder in a 3–1 home win game against Melbourne City FC. He could have had a hat-trick from another goal-bound header before half-time but Stefan Mauk managed to clear it off the line. On 25 November 2017, in the last quarter of the game, Papadopoulos spat at Sydney FC striker Matt Simon, who retaliated, Avraam went to ground covering his face, resulting in Matt Simon's dismissal. The incident saw the Roar make a statement shortly after the game panning the actions of Avraam that marred the club's 3–1 A-League loss, against Sydney FC. On 8 December 2017, Papadopoulos was given a seven-match ban by the A-League judiciary for spitting on Sydney FC's Matt Simon. The defender's ban included the one match he had already served, when he sat out the Roar's 2–0 win over Western Sydney Wanderers FC.