With soccer tactics constantly changing, certain types of players are not always accommodated.
Roles like the libero, trequartista, striker partnerships and burly center backs have become, or are quickly becoming, outdated in modern football. Other roles like ball-playing goalkeepers, false nines and wingers that cut inside onto their stronger foot have become very trendy.
This often leaves current players wishing they had played in a previous decade and former players wishing their career had started a little later. Ah, what could have been.