The 27-year-old is currently in pre-season training with Inter at Pinzolo but has been told he is not a part of coach Andrea Stramaccioni's plans for next season.
"I think the club has made its decision and I believe that I am not part of the project," Pazzini said to Gazzetta dello Sport.
"I will look to work hard in an attempt to change their minds, but I have always been honest and I am being so now too."
Pazzini moved to Inter in January 2011 from Sampdoria and scored five goals in 33 appearances for the Nerazzurri last season.
The Italy international is a reported target of Sampdoria and Lazio and is under contract with Inter until June 2015.
Stramaccioni, meanwhile, does not expect Sao Paulo playmaker Lucas Moura and Corinthians midfielder Paulinho to arrive at the San Siro this summer.
Both players have been strongly linked with a move to Europe after their solid campaigns with their respective clubs.
"Lucas and Paulinho are players of international level," Stramaccioni told Gazzetta dello Sport. "But from the information that I have, they seem to be far away from Inter.
"It's useless to give hope to our fans. I don't think they are targets for this year, at least not for now."
Inter face strong competition to sign Lucas, who is under contract with Sao Paulo until June 2014 and is also a reported target of Real Madrid.
"I don't know if Lucas is a dream or an aim," Inter president Massimo Moratti said to Sky Italia.
"Of course, we are monitoring him and we shall see if the financial requirements are there to complete the deal."