Walter Mazzarri admires the work done by Vincenzo Montella at Fiorentina, but sees “no reason to change” a winning Inter side.
Inter host the Viola on Thursday evening at 19.45 UK time (18.45 GMT), click here for a match preview. 
“This is another step in our growth process, the one I’ve been talking about since I arrived,” noted Mazzarri in his Press conference.
“Fiorentina have different characteristics to our recent opponents Juventus and Sassuolo, so it will be yet another test to see if we have the right attitude.
“Specifically, I’ll say Fiorentina give no tactical reference points and without Mario Gomez it’s difficult to see where they’re coming from. Everyone moves off the ball, there’s a lot of possession and they have a different approach to the sides we’ve faced so far.
“I always liked Giuseppe Rossi and wanted him in my team. They did well to invest in him when he was injured. He is decisive and a great buy, a real champion.”
Mazzarri has worked with Montella before, as he was in his Sampdoria squad and they didn’t always get along.
“I had figured out he had real character, as he didn’t want to sit on the bench! He’s a good lad and I started to figure out even then he wanted to be a Coach, especially when he came to me afterwards to study training sessions.”
Diego Milito made his comeback after seven months and bagged a brace in Sunday’s 7-0 demolition of Sassuolo.
“Diego knows he hasn’t got 90 minutes in his legs and his re-introduction into the squad must be gradual. We all know his quality, but we can’t lose our balance and that means everyone working hard.
“This is the least likely game to perform experiments in, so for the moment the XI we’ve used recently are the ones giving us the most guarantees. I don’t see why I should change.”
Wallace arrived on loan from Chelsea this summer, but has barely set foot on the field in an Inter jersey.
“Of all the players, he is the one who most needs to improve and he has to see what he can do,” explained Mazzarri.
“I put him on when the result is practically secure. It’s a shame we only have three substitutions, as I don’t get as much opportunity to play everyone.
“You play football with 11 men on the pitch at any one time, so who am I supposed to leave out after they have done so well? There’s no reason to change and the players know that. They can see the situation for themselves.”
Ricky Alvarez has made a huge improvement this season and Montella revealed Fiorentina wanted to sign him last month.
“I spoke to Ricky, he needs to work under the radar, as in the world of football people change their opinions of you so quickly. Everyone knows I like this player and when there were rumours of his sale I immediately said I first wanted to see him up close. I am happy with the whole squad, as I honestly didn’t expect such a strong start.”
Inter squad for Fiorentina: Handanovic, Castellazzi, Maniero; Juan, Andreolli, Campagnaro, Ranocchia, Samuel, Rolando, Jonathan, Pereira, Wallace, Nagatomo; Kovacic, Alvarez, Guarin, Cambiasso, Taider, Kuzmanovic; Milito, Palacio, Icardi, Belfodil