Pure Futbol

Start a campaign and make sure your player is a defender, also have the difficulty set to at least Medium or you may well struggle to get enough points (though be aware that you can exit Campaign at any time if you are struggled and alter the difficulty via the options menu). Then just play through the matches and amass as many points as you can to upgrade your player. I would focus on any choices that allow you to play multiple matches – as you will get all of the points for each match and the reward for winning overall, plus it only uses up one day of progress. You should get to 4 star with plenty of time to spare though the achievement will not unlock until you finish the campaign.