No problem, man.
It likely is possible to house "time to get rid" in a still fairly respectful way, but those posting things with those sorts of words tend to put a lot of other baggage in with it, about the veracity of his injury issues and such. Really no need for that; professional footballers put a hell of a lot of work in early doors to get to where they are - very few just choose one day to piss it all away for nothing.
I've always been averse to the use of nicknames like 'sicknote' too, because they imply faking it to get out of something. 'Jack Wheelchair' is darkly funny though, pretty witty, but it also doesn't carry that same cynical suggestion about the player's character.