Osimhen will be missing on the Malmo game, he has been injured, but Malmo game seems like an easy one for Galatasaray. Malmo is 30th in the league right now, and Galatasaray is 4th, so it looks like we are going to see them have a good game there without a doubt, shouldn't really be a big deal at all.
Obviously they lost Icardi a while back as well, so it's clear that they are going to have hard time with strikers, but they do have some other good players which I am sure will play and make up for the difference, sometimes not having a good striker is not an issue at all, it allows others to show up. Mertens could always play as false nine, I mean he is not a striker, but he can play there, and take the defense with him, allowing wingers to have easier time.
Considering the opposing team Galatasaray is facing, I think even though Galatasaray will play away but I believe Galatasaray is still able to win in this match. But indeed, not to underestimate the opposing team too much, because when they play in European competitions like this of course they will also still make their best efforts not to lose eventhough indeed, I believe it is difficult for Malmo to be able to beat Galatasaray. Because after all, although some of Galatasaray's key players were injured, but in fact Galatasaray still managed to get good results also for the Europa League and in the domestic league. Thus, I believe Galatasaray still has a good chance to get three points despite playing away.