Juve takeover Candreva's loan from Livorno.
Udinese have agreed a deal to loan him to Juve with an option to buy at the end of the season for a reported £6.5m.
"It is a dream come true and I cannot wait to start this new adventure," Candreva told Sky Sport Italia after the meeting with Bianconeri directors.
"I don't know, tomorrow I'll be at the disposal of my new teammates and the Coach. We'll see.
"I can say that 2010 has certainly got off to a brilliant start for me. I feel positive and I hope to win over the Coach and club to prove I am a player worthy of Juve."