Deco's form has waned at Stamford Bridge despite starting brightly following an £8million move from Barcelona last summer.
Quaresma did not adapt at all well to Serie A following a £20m transfer from Porto and joined Chelsea on loan in Ferbruary.
Clock ticking: Deco could be heading out of Chelsea this summer
The winger has been struggling for fitness and has appeared mainly as a substitute for the west London club, yet Inter could try to offload him in a swap deal for Deco, according to Italian super agent Ernesto Bronzetti.
If that fails, the Italians have also been linked with a straight £8m bid for the Portugal star, who played under Inter boss Jose Mourinho at Porto.
However, Bronzetti, who is close to the San Siro movers and shakers, said Sweden striker Zlatan Ibrahimovic would not be leaving Inter in the summer.
'Ibrahimovic will remain at Inter because no-one can guarantee him €12m per season, however, Deco could land in Milan in a swap deal for Quaresma,' Bronzetti told AGR.
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