The Nerazzurri coach thinks the pressure is affecting his squad, while insisting that the fans' protests were not the only reason to pull the plug on the sale of Fredy Guarin.
The Giuseppe Meazza side was kept to a 0-0 draw by Catania on Sunday afternoon as its poor 2014 form continued. Mazzarri thinks his players' disappointing performances are a result of the pressure at Inter.
"In some ways, with an atmosphere like this, the lads might be able to express themselves better away from home. They're under a lot of pressure," Mazzarri said at a news conference. "It's not about their age. I'm talking about players who are at a club where results are expected. Lots of them weren't used to the pressure they find themselves under here.
"I'm talking about players like Jonathan, [Ricky] Alvarez, [Zdravko] Kuzmanovic. We need to try and recreate an atmosphere where everything's in tune again at home. We're in a period when we need lots of support."
The Inter coach then went on to discuss Fredy Guarin's collapsed move to Juventus last week and stressed that the protests of supporters are not the only reason why club president Erick Thohir opted to pull the plug on the deal.
"Guarin and the fans' influence on the decision? We didn't choose not to proceed with the exchange only because of the Curva Nord's protest," the manager said. "The clubs' directors considered lots of things and decided not to go ahead with it."