[1] In 2005, newly promoted Serie A club Treviso acquired his services on loan but made him play with the Primavera side all season, where he formed a valid striking partnership with Italian youth international Robert Acquafresca.

Treviso extended his loan for one more year in 2007–08 but even though he played 31 times and scoring 1 goal, Russotto failed to perform at a high level like the previous season and was used mainly as a sub.

In the summer of 2008, he finally returned to Bellinzona, and then left out again on loan, this time to join Napoli in the Serie A, with an option for the Southern Italian side to make the move permanent.

However the young trequartista was used sparingly by head coach Edy Reja and his end-of-season substitute Roberto Donadoni, and Napoli then decided not to exercise the buy-out clause and therefore Russotto was sent back to Switzerland again.

[13] On 9 April 2022, he was released together with all of his Catania teammates following the club's exclusion from Italian football due to its inability to overcome a number of financial issues.