Upvote:1
As per Timatic, the database used by airlines:
Residents of Italy with an expired Residence Permit are permitted to re-enter Italy. They must also have a receipt issued by the Italian Post Office or Police Department proving that they have applied for the new residence permit in less than 60 days after the expiration date. They must return to Italy directly from outside the Schengen area.
If you fulfil this condition in its entirety, you can travel and be let back into Italy