Port Aventura isn't just any resort, as Universal has already owned it in the past. If they ever sold Universal Mediterranea, it was because the resort was the least developed of them at that particular moment in time and Vivendi needed money desperately.
Not only is buying PortAventura easier than building a new resort from scratch, but also much cheaper. The timeline of developments and expansions hasn't been compromised, and so far they've stuck to what the plans were 20 years ago. In fact, they've been following them bit by bit (except for one onsite hotel and CityWalk).
More higher ups are expected to arrive from both Disneyland Paris and Universal. A huge recruitment campaign for the 2024 season is also on its way too.
The deal has been already sealed, they just have to make it public.
So... See y'all soon
By the way, when all of this is over and if Universal turns out to be the buyer, I feel like some of you would owe the European theme park community an apology.