The former Chelsea defender came off the bench for the Gunners at the Etihad following an injury to Pablo Mari, but looked completely out-of-sorts, failing to stop a through-ball for the opening goal and then getting sent off for a professional foul on Riyad Mahrez to give away a penalty.
Afterwards, he took the opportunity when interviewed by Sky to apologise for his performance, while also insisting that he and head coach Mikel Arteta both want him to remain an Arsenal player.
“It’s not the team’s fault, it was my fault,” he told Sky Sports after the 3-0 defeat.
“The team did well, especially with 10 men. The coach is amazing.
“I love being here and that’s why I continue to train hard and why I came here [to be interviewed] to show my face.
“I want to stay, the coach knows, he wants me to stay so we are waiting for the decisions.”
"I should have taken a different decision in the last two months but I didn’t.
“All about my contract, if I stay here or not. I have 14 days to be here and that’s it. I should have tried to decide my future as early as possible, but I didn’t.
“I don’t want to use that as an alibi or excuse, it’s my fault – that’s it. I love to be here.”
Arteta also addressed his player’s performance and contract after the game, and admitted he is unsure what will happen with regards to Luiz’s future.
“We talked in the dressing room [after the match]. David is very honest and straightforward,” the Spaniard said.
“I don’t know what will happen with his contract.”