As a Galatasaray fan, I sure do hope that United doesn't figure out a way to get Osimhen right now. If Icardi was healthy then I wouldn't mind much, I mean we knew that Osimhen is with us temporarily because of the situation, so him leaving isn't really a shock and could of course happen, but right now we are missing Icardi, he is injured probably until the season ends, or at the very best case early May or something. Which means, if Osimhen also leaves, we would be left with a single striker who would be Batshuayi and he isn't great enough to be our starting striker. Obviously if this happens, we would be in a rush to get a good striker, and that could potentially end in a very bad way for us.
We understand the concerns of most Galatasaray fans but we also have to realise that Osimhen is only a loan player who can leave at any time.
Manchester United might be serious about Osimhen and they've made an approach much more likely to sign him and it really depends on Napoli's decision. Galatasaray may need to buy another striker if Osimhen really leaves because Batshuayi is not one of the best strikers ever, especially with Icardi's injury, so with conditions like this, the club will definitely consider buying another striker as a step to maximize the front line to be more solid.