In the 2014–15 season, Abdou started the first five matches at the start of the season before missing out three matches, due to being given a compassionate leave. He then returned to the starting line–up, starting the whole game, in a 3–2 loss against Reading on 16 September 2014. A week later on 27 September 2014, Abdou played in the right–back position for the first time, starting the whole game, in a 2–1 loss against Huddersfield Town. Due to facing competition in the midfield position, Holloway acknowledged his first team status, saying: "Abdou was playing very well in midfield so I don't know what I'll do with him. I was really surprised by how well he did against Forest – against one of the best wingers in the division." As a result, he soon lost his first team place as a result and this last until December. Abdou made his return to the first team, coming on as a late substitute, in a 1–0 win over Brighton & Hove Albion on 12 December 2014. He regained his first team place in the midfield position for the side since returning to the first team and partnered with Shaun Williams. After being dropped on the substitute bench for one match, Abdou then switched to the right–back position for four matches. Towards the end of the 2014–15 season, he then reverted to his midfield position. It was not until on 14 April 2015 when Abdou scored his first goal of the season, in a 2–0 win over Wigan Athletic. However, the club was relegated after five seasons in the Championship after Rotherham United's 2–1 win against Reading on 28 April 2015. At the end of the 2014–15 season, making thirty–seven appearances and scoring once for the side, Abdou was named as the club's Player of the Year once again for the 2014–15 season after a vote by Millwall's supporters, as well as, winning two more awards. He was also signed a two–year contract extension after being offered by the club.