Alternate to the original solution, it would perhaps be a better idea to invest in 2 scouts over the one. Not only is it a lot cheaper, it also allows for a guaranteed gold.
For example, 4* Iran and 4* Zenit - Russian Premier League; look for the bear, (combined price as of now, less than 30k) will guarantee you Azmoun.
#Other options for Zenit are: 4* Croatia (Lovren), 4* Ukraine (Rakitskiy) and 4* Colombia (Barrios).
Similarly, if you know of a team (or league) with only golds of a certain nationality, those would work as well. It saves you from grossly overspending on a non-guaranteed Central African Republic player (one gold, one white ball).
Another example would be a 4* Burkina Faso scout combined with a 4* Bayer Leverkusen scout to find Edmond Tapsoba. (Thank you, IncredibleKoosh, for finding this one).
Edit: AssassinDMG has found another good, very cheap option - Togolese Getafe defender, Djene (Spanish 1st Division).