Higuain had a disappointing six months on loan at Milan before rediscovering his form in Turin.
“Gonzalo's history shows he needs strong motivation to give his best," confirmed Sarri. “He is currently in good shape both physically and psychologically, so he can and is giving the team a great contribution. He's really helping in the build-up, I feel he can do a tiny bit more in the finishing, so should go for goal himself more."
Sarri is also expecting big things from an in-form Douglas Costa.
He added: “He did well in Moscow and went a little wider because there was no space in the centre, but that too is the job of a trequartista, to find the space. I think Federico Bernardeschi's performances in that role have been underestimated, as we need balance right now and cannot afford a purely attacking player there."