Nobody gets automatically a pro card, because he won a European Championships (although he should!!).
It depends how the National Federations handle this. The National Federations can submit an athlete for Pro Staus, becauce he placed 1st, 2nd, 3rd or so in a big contest. Outside the US I only know of the winner of the Canadians and the (overall) winner of the IFBB World. Dennis Wolf got his pro card that way (he was NOT drug tested). Ali Tabrizi could ask for his pro card, but is not sure if he really wants it. Kamal ElGargni and Elshahat Mabrouk were IFBB Pros, but wanted to go back being amateurs.
I understand that some athletes who qualify for pro status prefer being amateurs for two reasons:
1) you need to take too many drugs.
2) the IFBB Pro League clearly favors athletes, who live in the US.