takes some persistence to get this and I finally got it with suarez at the start of my 4th season
started off with man utd, building the team, using the finances, selling players, etc. didn't take too long to have most players in team/bench to be all above 85/86 to make sure you comfortably win most things and players getting better and better
it was inevitable one of my front three were eventually gonna get the legend/bandiera role, either suarez, neymar or griezmann
not sure if it really helped but I made all three my favourite players over each season and I kept checking the team roles to see who was inline to get what, you can check this from the main master league menu > my team info > team role list.
a slightly long winded achievement but if you are going for the world cup one you may as well go for this