To me that X post you refer to only says "you can choose one of them", which is exactly what we can do. Sappurit does not actually say that you would receive that player. So far, all that happens, is that you confirm supporting your player, you cannot support the other two anymore (fair enough) and that's it. Nothing really happens, no further information. It feels a bit odd to me.
I do not expect us to receive the selected player; when is the last time everybody would get a [max OVR - 1] player for doing essentially nothing at all (apart from hitting the support button and confirming my choice)? I mean, I'd be happy to be surprised, but I'm not counting on getting a 119 player for free this easily. So my main tip is: do not get your hopes up... Having said that: given there is basically 0 information, I also have 0 idea on what will and will not happen based on supporting one of these players...