One of the most difficult times of your life might occur when you realize that it is time to switch careers. This is especially the case for professional athletes who have literally spent their entire life playing the sport of their choice. Which can perhaps make it at least a little bit more acceptable that some players definitely do not seem to be willing to retire until they might have to be dragged off the field.Though you also just have to hope that they have saved up enough from those NFL paycheques to help make that transition into the next stage in life all the easier. The light at the end of the tunnel is coming for the 20 athletes on our list and by the time the 2020 NFL season is kicking off http://www.clevelandbrownsteamonline.com/sione-takitaki-jersey , there is a very real chance that they are not going to be around in the league anymore.In fact, in several of the cases such as Thomas Davis and Darren Sproles who have both spent over a decade in the league, that is all but a guarantee as they have both announced that their retirement will come at the end of this season. And even if some of these players have some pretty cushy jobs right now Sheldrick Redwine Jersey , like John Denney who has been the long snapper in Miami since 2005, he is still also turning 40 in the offseason!Make sure you take the time out of your Sunday, Monday or Thursday to see some of these legends in action whenever you get the chance because there is a very good chance they will be out of the league by 2020. There are no guarantees in the NFL Kaleb McGary Jersey , even for its biggest stars. Even on the most long-term player-friendly deals and perceived good situations that an individual talent may have with their current team, there always remains a possibility that they will move on to a new team. As is the case with any professional sport, money and a desire to win a championship are paramount in importance for an athlete Kendall Sheffield Jersey , and a clear-cut above sheer loyalty. Players will change their situation at the drop of a hat if they think it will benefit them, and we can only expect that to remain the case as the seasons roll on.So, how will the NFL landscape look in several years with the sport's biggest names? While there's no doubt that some will stay in their incumbent situations John Cominsky Jersey , we can also expect to see quite the shakeup of players signing deals with new teams in free agency. Let's take a look at how it all may play out in a few years, and which teams will be getting a boost from some of the elite players in the sport.Below is a projection of where these 15 NFL stars will be in 2020.