Manchester City secured their place in the Champions League knockout stage with a 2-0 victory over Galatasaray on Wednesday, but the win was overshadowed by an injury to key winger Jeremy Doku. The 23-year-old Belgian had a significant impact on the game, providing assists for both Erling Haaland and Rayan Cherki before being forced off the pitch in the 37th minute after a challenge from Davinson Sanchez.

Doku's injury is a concern for City manager Pep Guardiola, who is already dealing with a number of sidelined players. The extent of Doku's injury was unclear immediately after the game. However, Guardiola stated that Doku is set to miss Sunday's Premier League match against Tottenham due to a calf injury.

Before his substitution, Doku showcased his importance to the City squad, setting up Haaland's opener and Cherki's goal with incisive passes. His pace and creativity have been a valuable asset for City this season, making him a key component of their attack.

The victory against Galatasaray ensured Manchester City's progression to the Champions League last-16, avoiding the play-off round. Haaland's goal was a welcome return to form, as he had not scored from open play in his previous eight appearances. Cherki also added to the scoreline, solidifying City's lead.

However, Doku's absence will be keenly felt by Manchester City. He missed a game in Norway earlier in the competition due to a knee injury. Prior to the Galatasaray match, Guardiola confirmed Doku was not fit enough to play against Bodo/Glimt. Doku also admitted that he could have been out for a long time after Diogo Dalot's tackle in the Manchester derby. Doku's recent leg injury caused him to miss the Crystal Palace match, and he was expected to be out for two to three weeks. He was aiming to return for the Sunderland game on New Year's Day.

City have been struggling with injuries to key players recently. Ruben Dias, John Stones, Josko Gvardiol and Mateo Kovacic have all been sidelined.

With Doku potentially joining the list of absentees, Guardiola may have to reshuffle his attacking options. Phil Foden replaced Doku in the game against Galatasaray.

The draw for the Champions League last-16 will take place on February 27. In the meantime, Manchester City will focus on their domestic campaign, hoping that Doku's injury is not as serious as first feared and that he can return to action soon.