Record says negotiations are so advanced that a deal could be settled 'within hours'.
Juve will pay €100m for Ronaldo, who will sign a four-year contract. The deal will be worth €30m-a-year.
A breakthrough was made yesterday when Ronaldo's agent, Jorge Mendes, met with Real president Florentino Perez in Madrid for an 'emergency meeting'. The summit was a marathon and ran until dawn this morning.
Supporting Juve in the deal is Fiat, which will become a personal sponsor for Ronaldo to help fund the agreement.