Galatasaray is considered a team with one of the highest revenues in the world last season. I think that has something to do with them selling some places and getting smaller, which is a good business decision if they are not using those lands.

Not sure where those lands were, but seems like they were worth something. Downside is, sure they have no debt and great players, but they also do not have constant amount of lands to sell forever, so this was a one time thing, they need to make sure they use it smart, and they do a good job, if not, and they fail, or something bad like Osimhen injured etc happens, they are going to end up with bad results, and that money would be gone, with no chance to coming back ever again.