Costa played for Guardiola at Bayern Munich.
He said, “Sarri insists on intensity and very high pressing. He has a different style to Allegri, who set us up deeper.
“The face of Juve is changing, and we're doing everything that's being asked of us. I played in Guardiola's Bayern, who were very attacking.
“Then I had Allegri, who was more defensive, and now I'm discovering Sarri. Everything I learned from Allegri now has to be readjusted to Sarri's football.
“Sarri and Guardiola are similar: they insist on high pressure and keeping the defensive line very high.
“Guardiola likes very quick touches of the ball and so does Sarri, even if the new Coach takes more care of the defensive phase.
“They're different Coaches who propose a similar idea of football."