It has been suggested the Red Devils were lining up a move for the 27-year-old as they look to bolster their attacking options following the departures of Cristiano Ronaldo and Carlos Tevez.
Ibrahimovic's future at Inter has been the subject of constant speculation all summer, with the player hinting he could be ready for a new challenge having claimed interest from Chelsea on Sunday.
However, Ibrahimovic's representative Mino Raiola insists there has been no offer from United.
"There is absolutely no truth that Manchester United have bid for Zlatan," Raiola told skysports. "If they did bid they did without me knowing and without Inter knowing.
"Zlatan is calm, he has a four-year contract at Inter. He is happy at Inter and is not thinking of moving."