Don't forget to get the TOTY Ronaldo 7 match loan if you haven't already, because it's piss easy to get. You can get it in a single semi-pro squad battle, or a World Class one if you use it to work towards icon swaps.
Easiest way - build a full Portuguese squad, then put Felix and Rafael Leão up front. Score once with each to complete the La Liga/Serie A objective, then both other objectives combine. The first is scoring a total of three goals in a match with Portuguese players, and that will trigger automatically when you finish the other, tricky one. You need to score a header, with anyone. Manage it, and he's yours.
Edit - You're better off scoring a third before trying for the header, just in case you don't get it. That way, you don't need to get the 'score three goals with Portuguese' objective anymore.