Injuries

Even at GoalStar your players can get ill or injured.
Maladies and injuries can have different kind of levels.

According to the level of injury/ illness, the more or the less convalescene time will be taken.
Injured players can continue playing, but you should take into account that the playing ability
is lowered due to the level of the injury. In general its not advisible to do so, because it is
most likely that the injury worsens.

Furthermore a injured player will not be a great help for your team.

A teamdoctor can take affect on the recovery time of your injured players.
Though a good team doctor is expensive, he could help to lower medical treatment costs, because external treatment is even more expensive than the best teamdoctor (but only engaged when its needed)

If a player is heavy injured (injury level 9 or higher), it could happen that he must end his career abortively.
That do not happens very often, but the likelihood rises sharply when managers deploy injured players and let them play

on dispite of their injury.