Diego insists Juventus will soon come good.
Alberto Zaccheroni's arrival has failed to turn around results, but Diego argues the players are still adjusting to his style.
"The team has gone through some changes and we are settling into this new style," wrote Diego on his personal website.
"This will be the third match with our new Coach, the second on home turf, and we have worked very hard to put the side back on track. We also discussed the issues in depth.
"I am convinced we will begin a new successful path for Juventus."