Galatasaray's transfer budget is around 80 million Euros. Also, it is said that Osimhen's salary will be around 14 million Euros. In order to complete it to 20 million Euros, they will arrange advertisements etc. from outside and give this money to Osimhen annually. Advertisements like Ülker Çizi.
Leroy Sane will definitely not create an impact like Osimhen, but he will increase the quality of our league.
So, Leroy Sane has properly join the Turkish giant, Galatasaray. I simply agree that he's a good signing but not a direct replacement of Victor Osimhen who's believed to leave Galatasaray, for Sane is a winger and not a striker. Leroy Sane don't actually have to bring an Osimhen effect to the club but just giving his best and being impactful to the team would definitely go a long way for Galatasaray in maintaining their top spot in the super lig.
I am pretty sure they didn't get Sane as a replacement, that would not make any sense, I am 100% sure they are aware of the fact that Sane is a winger, and not a striker lol.
Osimehn situation is still going on, from what I read on Nigerian twitter (English language ones) the situation is simple; he is rejecting Saudi's, Galatasaray has a good offer, the best so far, but he would prefer to go to Europe so he is waiting some European team to offer as much as Galatasaray or at least close, if they do, he will go there, if not, he will go back to Galatasaray and play there for a few years and try again. His desire is obvious, be the player United wants, or Barcelona wants, something like that. Juventus after Vlahovic was a good idea, but they didn't offer as much.