That's the question where the answer is not clear, he is training in the US, so why would he still come back in the Philippines. Well, if he will not be successful in the US, with his height, some teams will be interested on him, and you are right TNT might signed him, but how is it going to affect the play of the TNT since this team loves to run.
Training is the US was Greg's lame alibi of his opposition on his possible trade with Cstand. He is 30+ years old and no amount of training could change his style of play at this age.
Though he still have no contract with Ginebra, the Kings still hold the rights of Slaughter and this may change with the current rule which allows restricted free agent to chose teams they wanted to play with.
If i were Greg, i'll move away from SMC teams and realize that all of this is part of the business and everybody in the PBA at the moment is tradable except the name Junemar Fajardo.
My message to Greg Slaughter, be a man brader and show to the Filipino basketball fans that Chua is wrong with this move, after all you are still in demand in the PBA because a big man like you still is valuable.