Galatasaray must win the match against Dynamo Kyiv, 3 points will give them something more comfortable in the standings to be able to qualify directly to the next round.
Especially considering Galatasaray's next opponent is Ajax, although I'm sure Galatasaray will be favored. But it won't be easy enough for them to conquer Ajax who will play at home.
Galatasaray has a very big chance of qualifying, but Ajax will also fight for them to qualify, so they won't be easy to beat. The match will be exciting.