The players’ site shows you all the details to the chosen player. Besides the actual abilities (only visible on own players, and other clubs’ players being offered on the transfer market) you can see the amount of scored (cup)goals as well as info on injuries and bookings.
It is also possible to release a player from the team in order to offer him on the transfer market. The option “Career-Highlights” shows highlights of the player’s entire career.
Furthermore the option “Train to assistant coach” offers you to do this with any player (at least 30 years old) in your squad. The education takes 4 weeks and costs 100.000 €. After 4 weeks, the player will no longer be player in your team but assistant coach.