Well everything is in place to make the deal. I really don't think the parties can do anything more. It's Thohir, pulling the breaks. Apparantly Mazzarri is begging Thohir to stop the deal, and reports even say that Mazzarri has forced to resign.
The deal is a simple "ok" from Thohir from being done, but it's by no means certain that a green light from him will arrive.