Play him then! If the fucking management and coach have no intention of using him, then no need to punish him by keeping him here. If we were playing well and getting positive results, I would be hard pressed to find a reason for him to feature; after all, if it ain't broke, don't fix it!
However, this current Juve team has been playing the worst football I have seen in over 2 decades, and yet we still stick with the same shitty formation, clueless players, and our hopeless coach refuses to make any changes. We are so boring, predictable, and ugly to watch. We are slow, lack creativity, and generally are a team without ideas. I am not saying Gio will change everything, but at least give the guy a chance to play consistently since the results are abysmal, and the performances revolting.
Play him NOW, or sell him to someone who will appreciate his true value!