The pair have very different political and business views on how Italy should emerge from the economic crisis.
"Poor Yaki never wastes an opportunity to remind Italians he is an imbecile," slammed Della Valle.
"We ought to have a referendum and ask if we still want him in Italy. John Elkann belongs to a family that has destroyed an industrial quantity of jobs in Italy and, therefore, the hopes of many young people.
"It is an absolute shame that one of the Agnelli family should suggest young Italians have job prospects. Someone who dares to claim they stay at home because they don't want to work is an imbecile.
"His family should keep him at home to rest for a while. Maybe send him skiing."
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