The Nerazzurri are looking to revamp a squad which has underachieved in recent seasons, with Argentine defender Silvestre a standout player for Palermo last season, scoring five goals in 29 Serie A appearances.
Inter had wanted to sign Silvestre, 27, on a permanent deal but have instead agreed a season-long loan with an option to buy the former Catania stopper for 8 million euros in January.
He comes as a direct replacement for Lucio, who was released
While Serbian midfielder Stankovic and Uruguay international Forlan were expected to leave Inter this summer, the news that Cesar has not been given a squad number is a relative surprise, although there had been reports of an impending exit after Slovenia keeper Samir Handanovic joined from Udinese earlier this week.
Stankovic, 33, has spoken openly of looking for a new challenge abroad, while former Manchester United and Atletico Madrid striker Forlan, also 33, fell out with club management last season and is in talks over cancelling his contract.
Cesar, however, is still regarded as being one of the top goalkeepers in world football, despite a relatively poor campaign last season.
At 32 he is still relatively young for his position and news of his impending departure will alert some of Europe’s top clubs, although the relative riches in his native Brazil may see him tempted to join the likes of Ronaldinho back in his homeland.