He had to be substituted after 54 minutes of the win over Pescara, after a crunching tackle from Sulley Muntari.
"It was an impact where he twisted it, there's reason to be optimistic," Allegri told Mediaset Premium, considering their Champions League trip to Barcelona.
“The lads did well to win today, but we had to manage the game better and not waste our energy. It was hot, it was all a chase and we didn't use the space well.
“The lads were good but we could have done better with the ball in the second half, the ball didn't glide well but the pitch was beautiful.
“Juan Cuadrado? He has room for improvement, sometimes he gets kicked because he doesn't release the ball quickly enough, so he needs to improve in that. He's becoming important though."