Mourinho led Inter to the Treble four years ago.
"I often think we could bring back Jose rather than buying lots of players, but it requires common sense," Moratti told Tele Lombardia.
"We also mustn't forget he only arrived because of Roberto Mancini's post-Liverpool outburst. It was difficult to tell Mancini we had signed another Coach while the Scudetto celebrations were going on.
"Mourinho confirmed his great professionalism. I warned him we'd need to wait for Mancini and he said he'd remain at my disposal without contacting other clubs. He kept his word."
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