Manchester City boss Enzo Maresca revealed Antoine Semenyo faces up to eight weeks on the sidelines with a knee injury.Semenyo sustained the injury in the later stages of City’s 3-2 win over Ipswich Town on Saturday.Semenyo has two goals and three assists for City this seasonGettyEnzo Maresca gives update on Antoine Semenyo’s knee injury“In the first moment we expected an even worse injury so we were more worried,” Maresca said.“After yesterday’s [Sunday] scan we feel much better because it’s not so big like we expected.“It could be eight weeks. Now in this moment the most important thing for him is his recovery. “When he is back around December it will be like a new player in terms of energy.”In brighter news, Maresca confirmed superstar striker Erling Haaland would be available for City’s Champions League clash against AEK Athens on Tuesday.Haaland, who scored twice against Ipswich, was seen limping off the field at full-time.Is Erling Haaland available to play against AEK Athens?“He can be available,” Maresca said.“We’ll see. We have a session now and we have some doubts after Saturday’s game.“He was quite good yesterday. Better. So we’ll see today.“Replacing Erling is always difficult. We have some different options and we’ll see tomorrow.Haaland’s potential absence against AEK leaves a serious hole in City’s starting lineupGetty“It depends a little bit on the gameplan and also there is a chance he can be available tomorrow.”Erling Haaland’s relentless workloadThe timing of Semenyo’s injury is particularly unfortunate given Maresca had identified him as a possible option to give Haaland a breather.Haaland has started all but one of City’s 11 fixtures in all competitions this term.The superstar striker’s high volume of minutes comes after he played a key role in helping Norway reach the quarter-finals of the World Cup, where they were eliminated by England.“First of all, to lose Antoine or any player for us is not good,” Maresca added.“In terms of Erling, we said we can use Antoine as a nine but we have different players that we are going to try to find a new solution. We will see.Maresca is hoping City can bounce back from a 4-2 loss against PSG last WednesdayAFP“At the moment it’s Erling. Why do we need to think about a different nine when Erling is there? If something happens and we need a different plan or different nine, we will see.”City’s Champions League clash against AEK takes place at the Etihad Stadium and gets underway at 8pm.