All credit goes to NmEWarEagle for this solution .
TrueAchievementsPlease note this is a guide to get "You Struck Gold" but will also get this trophy.
First of all, go to the instructions tab on the scouting screen. Next, choose the box of your best scout and add the attributes: defensive-minded, first team quality, and strong. Position should be any. DO NOT CHOOSE MORE THAN THREE ATTRIBUTES. If you choose more than three, you most likely will not find any players.
Next, get your best scout, send him to England, and simulate a few weeks. If successful, the achievement should pop during simulation, once your scout "discovers" Vincent Kompany. You do NOT have to individually scout Kompany or sign him for the achievement to pop.
If you're having trouble, you can go to the "transfers" tab and move the right stick left and right until you see the box with the three attributes. If it says "scouting in progress..." then you can wait it out by simulating some more. Or try moving the scout to another major country (Germany, Italy, France, Spain, etc.) and scouting again.