#6 Ronaldinho
Ronaldinho was one of the most famous footballers in the world at one point, and still to this day, he's recognized by fans of the sport as one of the greatest to have graced the game.
He seemed to flourish for every side that he played for, going from Gremio to Paris Saint-Germain, where he quickly rose to the top of their player rankings and multiplied his market value by five in the process.
The Brazilian was signed by Barcelona in 2003 and this is where he entered his prime. He scored a whopping 70 goals in 145 appearances, which is even more incredible when you remember that he was primarily a midfielder. One of the main reasons behind why he posed such a threat to the opposition was the fact that he was so skillful on the ball, defenders simply didn't know how to handle him.
He left Barcelona after five excellent years with the club to join AC Milan, where he became a legend there, too.