The central bank has told Del Vecchio that in order to exceed the 20% threshold, his holding company, Delfin, must be transformed into a bank holding, Milano Finanza reported without citing sources.

The ECB had given its green light to Delfin to raise its holding in Mediobanca above 10% and just short of 20% in August 2020.

Mediobanca's CEO Alberto Nagel, came under pressure after the eyewear magnate emerged as the top investor in the bank, with a share of just under 20% and another Italian tycoon, Francesco Gaetano Caltagirone, bought a 5.5% stake.

Delfin and the ECB declined to comment.

(Reporting by Gianluca Semeraro, writing by Giulia Segreti, editing by Federico Maccioni)