The midfielder has struggled to break into Sarri's starting XI since his summer arrival from PSG.
But Sarri, ahead of their Champions League clash with Bayer Leverkusen, explained: “Adrien Rabiot showed in pre-season he could do well on the right side of midfield, so we'll see. The only unknown is whether Adrien can play 90 minutes after such a long time out.
“We know that we have to work to do better, but are calm because we are working. We need a spark nowadays, but that can be many things. We've got to move the ball quickly, otherwise possession becomes sterile, and not defend deep after we've taken the lead.
“It's important that we always try to control the game. These are all things that represent a change of mentality at Juventus, so they do not come automatically. We've seen them in moments, for example the first half in Rome."