The Italian club promised to multiply his wages tenfold, but it seems that was not enough to break his ties with the world champions
The website reports the former Real Madrid man was on top of the list at San Siro after Leonardo packed his bags for a director's role at Paris Saint-Germain.
President Massimo Moratti sent former Madrid ace Luis Figo, who was coached by Del Bosque for three years at the Bernabeu, to convince him into joining and Inter offered up to 10 times his current wages with Spain.
However, the World Cup 2010 winner responded politely and told the Italians he was not willing to break his contract with the national side.
Chelsea were also supposedly keen on the coach but he preferred to respect his contract, which runs until 2014, as he rejected them too.
Inter replaced Leonardo with former Genoa coach Gian Piero Gasperini during the summer transfer window after they severed ties following a six-month relationship.
The Brazilian delivered a Coppa Italia trophy and a second place finish in Serie A last season.