99% he stays at least for the Euro tournaments, so he can be sold during the winter break. He is now in Switzerland with the team of Levski. That's all I know. And, Marcoa, I believe Porto already signed a slovenian player? for that position.
Naaah, Pavlin is more strong physically, and Alexandrov counts more on his technique. Besides, he is more mobile on the field. But in a few days he will start for Levski in the CL qualifications, and he will not be usefull for Porto, plus he is non-EU player.
And he stays for now.