If the lad has some functioning brain he should prefer Juve over Citeh, anyday. While at Juve he can grow, Citeh expects him to be goalscoring like mad + Mancini will get sacked when a new top class manager is available + the new manager wants his own players too and he could end up sitting on the bench and let his career rot away.
But I still prefer the Benz to come for less money.