MODENA, Italy (Reuters) - A possible tie-up between Italy's top retail bank Intesa Sanpaolo (>> Intesa Sanpaolo SpA) and insurer Generali (>> Assicurazioni Generali SpA) would need "many authorisations" from regulators, a top official at the Bank of Italy said on Saturday.

Salvatore Rossi, who is the central bank's director-general and also heads insurance watchdog Ivass, said both institutions were closely monitoring the situation and had contacted the two groups.

Intesa said this week it was examining a possible deal with Generali.

(Reporting by Luca Trogni, writing by Silvia Aloisi; editing by Philip Pullella)

Stocks treated in this article : Assicurazioni Generali SpA, Intesa Sanpaolo SpA