Drulovic is a finesse player, very offensively minded and weak defensively. I do not think he should go to play in any of the "Arbeit Macht Frei" type of leagues. He should stay in Portugal or look for an opportunity with a Spanish or even a French club where his type of game is appreciated and can florish. If he were younger (he's over 30), he could also try the Italian league. I think it would be the best for him to play with Porto through the end of his contract (2 more years) and then go to some less flashy club from Mediterranian contries, or even to join the J-league or MLS if the monetary compensation is reasonable.