The striker officially signed for the Bianconeri until the end of the season from Southampton.
"I'm very happy," he told the club's official website. "It's all been a bit of a whirlwind and I still can't quite believe it but I'm happy.
"It was pleasing when I first heard of Juventus' interest in me.
"When everything was completed last night I sat down and I couldn't believe it.
"As I said before, it's been a pretty hectic three or four days but I'm happy."
The goalscorer was then asked if he missed Italian football, after spending five months away from the peninsula.
"I can honestly say I have, yes," he replied. "When I initially left I was happy to embark on a new and exciting experience in England.
"But in the end it became something I missed."
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