Media speculation suggested the Nerazzurri could be set to bring in striker Dzeko in a player exchange with Roma, who would get Alexis Sanchez in return.
However, the switch will seemingly not be happening this month and, according to Marotta, talks never actually reached an advanced stage.
Dzeko's future in Rome remains unclear amid a reported disagreement with coach Paulo Fonseca. He has scored seven league goals in 15 appearances this season but has not featured for the first team since coming on as a late substitute in the Coppa Italia tie against Spezia on January 19.
"It was a bit of audacity on the part of the agents of the two players," Inter CEO Marotta told the media on Monday about the rumoured Dzeko-Sanchez switch.