It’s actually not a short career anyway- it’s a career for life within football, if that’s what they choose. Once a player’s career ends all sorts of avenues open up for them. They could go into coaching, management, become a physio or an agent etc. Even someone with only L1 and L2 clubs on their cv are more or less guaranteed a job for life within football in some capacity, so all this ‘short career’ bollocks is just that... bollocks. So when a player is mercenary and jumps at the chance of a big signing on fee and quadruples their wage just to sit on a ‘big’ club’s bench because “when I’m 35 and my career is over, what will I do?” they are in effect just plain greedy, and are putting short term financial gain ahead of a more fulfilling playing career.