I get where you're coming from, but some players, unfortunately, do have career-ending injuries. Unless you have a crystal ball you won't know how it turns out for Grimes.
That said, most AFL players recover from injuries, even when pretty serious. To those that want to mention Egan I simply raise them a Garland. I thought Egan initially tried to come back fairly quickly. I also think that our Club having rehabalitated Garland makes managing Grimes' injury easier.