Yeah, I picked up the same, that Monza were looking for new owners back in March, the wikipedia hasn't changed and still shows the Berlusconis in charge via a company owned by Silvio's eldest daughter.
But it does seem to be conflicting as the Nottingham Forest owner is also looking at taking them on as of 6 Aug and not a sausage is coming up r.e. Portugese owners, and the only results for 'AC Monza Takeover' are the Nottingham Forest owner from this month and Orienta Capital Partners, an Italian holding company, from March.
Nothing on their Twitter, nor their linkedin, and obviously no articles, and I can't imagine its something they'd be sitting on their hands to announce, given its an end of an era for the club