If rumors are right, then it would be incredibly disappointing from c9. Yay leaving means he doesn't believe in the team. I would like to believe otherwise but its the only reason yay would leave.
eh I dont think you can say thats the only reason. He could leave because they agree as a team that he doesnt quite fit, irl problems, they have a trade sorted, he's going to NRG, etc.
definitely not going to NRG, NRG just put up a world class performance and even tho yay wouldnt make NRG worse, the fact that they might have to change the comps and their entire playstyle AGAIN would not be fun for NRG and they are better off with the current roster