Arsene Wenger says he is disappointed Arsenal failed to secure top spot in their Champions League group after losing 2-1 to Olympiakos last night.
A win over in Greece would have seen the Gunners top Group B ahead of rivals Schalke, who could only muster a draw against Montpellier.
Tomas Rosicky put Arsenal in the lead with a fine strike in the first half, but goals from Giannis Maniatis and Kostas Mitroglou consigned the Gunners to a second straight defeat.
Wenger was left ruing the missed opportunity that would likely have secured an easier draw in the knockout stages for his side, with Barcelona a possible opponent when the draw takes place later this month.
“We have to wait for the draw but we wanted to be first," said Wenger. "We need a good Christmas present."
"I'm not happy with things in the game but I'm happy with the team's desire."
The Arsenal boss left a host of first team regulars at home and fielded an experimental team in the defeat against Olympiakos, but says his side would face a strong team in the knockout stages no matter what their final qualifying position was.
"We can get a bad draw or less strong team, but you normally get strong teams through anyway now," he said.
The Gunners have now won just four of their last 13 games in all competitions and were forced to contend with being booed by their own fans following their 2-0 home defeat against Swansea on Saturday.
"For now it is important for us to focus on the domestic championship, forget about the Champions League a little bit and get ourselves back in decent form,” Wenger admitted.