Eriksen ended a six-and-a-half year stay with Tottenham Hotspur in January by joining Inter Milan on a four-and-a-half-year deal for €20m.
The 28-year-old former Ajax Amsterdam midfielder has not been a regular fixture in Conte’s starting eleven for much of his short spell in Italy.
Eriksen was only introduced for the final five minutes as Inter defeated Sassuolo 3-0 to move second on the Serie A table on Saturday.
Eriksen has already indicated he will evaluate his situation in January and now Marotta has communicated the club’s willingness to sanction his sale as early as possible.
"If by January Eriksen has played little, he will himself ask to leave," Marotta told Sky in Italy.
"We have to do it without any controversy from one side or the other, simply by considering it as a positive transfer move that has not been functioning for our technical-tactical needs.
"Will Eriksen be useful for this January's transfer window? Functional is the most correct term. It happens. Football history is full of cases like this; that there are players who turn out not to be functional to a guideline in the system of play. It is up to the manager to evaluate this.
"Last January, we grabbed an opportunity; we signed the player for €20m, and he is a very good player. Then some difficulties can exist, but the manager has the right and the duty to pick the 11 players who give him more guarantee.
"Any ideas for his replacement? We always look at opportunities. It is not easy to find solutions that are suitable for us."
Eriksen has made nine appearances in all competitions for the Nerazzurri this season –six of them in Serie A –but just three of them have been starts and he has not completed the full 90 minutes in any of those games.
