He is credited for the young core at Juve today with the likes of Matias Soule, Fabio Miretti and Samuel Iling-Junior, along with the summer arrival of Timothy Weah.
Manna also worked in Switzerland with Lugano and Sion sports chief Marco Degennaro told Radio Kiss Kiss: "De Laurentiis's choice would be an enlightened one if he took Manna. He's an excellent director, he sees football well, he makes careful choices. I remained on excellent terms with him after we worked together.
"He is predestined, he will be able to manage the Neapolitan squad in the best possible way. He has a good eye, he knows how to move his young players well and he has managerial skills. I'm sure that the choice made by De Laurentiis is exceptional. He set up a very good team at Juve's Under 23s. Many are now in Serie A and Manna's margin for error is very low."