The pair have been linked with moves away from the Blues and former boss Jose Mourinho wants to bring them to Italy.
Moratti confirmed to Gazzetta dello Sport: “(Inter coach Jose) Mourinho has asked us for Deco and Carvalho and we are working towards making him happy.
“Our wish is to sign both players and I have seen that the players’ intention is to join us.
“We still haven’t reached an agreement with Chelsea but I think we will do in a short time.”
He added: “We are interested in Carvalho primarily for the UEFA Champions League. He has the right experience, he is calm under pressure and brings experience in the defensive line.
“Our coach has guaranteed quality and I have every intention to make him happy.
“Deco will have two tasks: to do well immediately and to help [Brazilian player Philippe] Coutinho mature as a player,” said Moratti.
“Coutinho will arrive next season [from Vasco de Gama] and plays in the same role as Deco.”