Sneijder was the lynchpin of Mourinho's side last season as they swept all before them to win a Champions League, Serie A and Coppa Italia Treble.
After netting eight times for the Nerazzurri and creating many more in their trophy-laden campaign, he went on to star at the World Cup for Netherlands, scoring five goals to help the Oranje to the final, where they lost to Spain.
Mourinho failed in an attempt to bring Sneijder's Inter team-mate Maicon to the Bernabeu over the summer, but the Dutchman's agent Soren Lerby has revealed that the 'Special One' also considered luring his client back to the club from which he was unceremoniously sold last summer.
And with negotiations over a new Inter contract no nearer to completion, Lerby admits that while Sneijder is happy at the San Siro, the presence of Mourinho at Real means a return may not be out of the question.
"There isn't a financial agreement [with Inter]," Lerby told De Telegraaf. "We will start to negotiate again when there is openness on Inter's part.
"Wesley wants to stay in Milan and he is very impressed with Moratti who told him that he would become the future leader of the team, but ...
"Wesley certainly didn't leave Real Madrid in a good way, but now that Mourinho is there it's different. Mourinho asked him what he thought about a return to Madrid."