Antonin Barak was the man of the match with two goals.
"I think there is a lot of work to do, a lot," Juric told Sky Sport
“Today we did very well the first 25 minutes, then it was more difficult.
“There is so much work to do but with this spirit we overturned the game. We won, but it was really hard."
On Barak, he added: “Both him and [Nikola] Kalinic and are important players but they have to find the best condition.
“We have so many players out and it is not easy to work with so many new players.
"[Mattia] Zaccagni has made a step forward in the last two games. He provided an assist against Juventus and the same today.
“He is improving, he must continue like this. It can still improve but there is a year of work behind."