The Turin giants came close to acquiring the Colombia midfielder last week, only for Inter to pull out of negotiations.
Despite Juve's initial disappointment, reports in Italy have claimed Guarin's proposed move to Juve is back on.
However, Marotta said to Gazzetta dello Sport: "We have already spoken at length about this issue and this is a closed chapter.
"There have been no meetings whatsoever."
Inter president Erick Thohir called off the proposed swap deal, which would have seen Juve forward Mirko Vucinic join the Nerazzurri and Guarin go the other way, as it did not offer his club "any financial or technical benefit".