#2 Marcelo
With Alex Sandro providing a mere 2 assists so far this season, an upgrade is clearly needed, especially with Juve's reliance on crossing. So, who better than Marcelo, who has a proven track record of providing great support for Ronaldo. Marcelo possesses incredible crossing and creativity rarely found in a left-back.
At his best, Marcelo got a whopping 10 assists in the La Liga 2016/17 season, an incredible number for a left back. Marcelo is simply the perfect fit for Juve's current style of play and his partnership with Ronaldo down the left, could be the key to Juve finally winning that elusive Champions League. Marcelo would fit in as Juve's starting left wing-back, helping them to overload the flanks and get crosses into the box.
Marcelo has of course already won 4 Champions League titles at Real Madrid, so is no stranger to the big games that Juve need to improve on, if they are to win the Champions League. He brings the experience and winning confidence, that only really Ronaldo currently possesses in the Juve dressing room.
Marcelo had been heavily linked with reuniting with Ronaldo at Juventus, but the return of Zidane as Madrid manager has made this more difficult. Juve are still, however, interested in pursuing a move for the Brazilian.