draw against Iraklis in the Greek Cup semi-finals, after an assist from Michalis Konstantinou. In the 2007 Greek Super Cup, he scored the only goal as Olympiacos defeated AEL 1–0. 2008–09 season For the 2008–09 season, Olympiacos appointed Ernesto Valverde as their new head coach, who dropped Mitroglou because he wanted his team to play a quicker and more offensive style of football. Mitroglou therefore made fewer appearances than the prior season. He scored in a 2–0 away win against Nordsjælland in the first round of the 2008–09 UEFA Cup. In the Superleague, he scored two goals in a home win 4–1 against Panionios. 2009–10 season After Valverde left Olympiacos, Mitroglou saw increased playing time. He scored his first goal of the season against Sheriff Tiraspol in a 2–0 first leg away win in the UEFA Champions League play-offs, also scoring in the return leg (a 1–0 home win). Mitroglou scored the equalizing goal in an eventual 2–1 defeat of Standard Liège in a UEFA Champions League group stage match on 21 October 2009. He also scored in home wins against Asteras Tripoli (3–0) and Ergotelis (2–1). His next goal came in an away draw (2–2) against PAS Giannina after an assist by Dudu Cearense. He also scored a goal in a heavy 3–1 away loss to Panserraikos. Mitroglou scored both goals in a 2–0 win against rivals Panathinaikos after assists by Dudu Cearense and Jaouad Zairi. He added two more goals in a 5–1 home win against Levadiakos. He scored in the club's 2–1 loss to Bordeaux in the Champions League round of 16, which saw Olympiacos eliminated following a 3–1 aggregate loss. His next goal came in Olympiacos' 2–0 win against Atromitos. 2010–11 season Ernesto Valverde returned as head coach of Olympiacos for the 2010–11 season. Despite being a starter and scoring a spectacular goal in the opening league match against Iraklis (1–2 away loss), Mitroglou only made four more appearances as Valverde chose to use Kevin Mirallas and Marko Pantelić instead. Mitroglou participated in the international match "8th Match Against Poverty" on 14 December 2010 (held at the Georgios Karaiskakis Stadium) as a player in the Olympiacos All-Star team and scored two goals. Loan to Panionios In January 2011, Mitroglou joined Panionios on a six-month loan from Olympiacos. In his debut, he scored both goals in a historic 2–0 away win against Aris, the first for the