That was not an option in the first place, you should know that. Conte is Juventus`coach, he decides which players will use and which he doesnt need, Melo found himself in the second group of players, and now he`s no longer a Juventus player. Despite his bad reputation and his 28 years of age, Marotta managed to sell him to the only club in Europe who was interested to make an offer for Melo, and the full price is still decent, so yeah, good job.
If you think that Melo should stay and start every game and etc, thats irrelevant and doesnt matter. I like Melo as a player too and if I was coaching Juve, I would definitely play him, alongside Pirlo and Vidal probably, but I am not. Conte is Juve`s coach, he knows and understands football better than me and every other member in the forum, even if there are users who think of themselves as the new Mourinho, Lippi or Capello and wont stop criticizing and complaining about everything in the club.