The young Everton striker broke down in training ahead of the Fiorentina game and was immediatley whisked off to see, and I think he's actually changed his name to, 'reknowned knee specialsit Dr Richard Steadman'.
Similar to the way that Jamie Foxx changed his name to 'Academy award winner Jamie Foxx' after putting on a bit of a good turn in 'Ray'.
The club have not said whether it's the same problem that kept Vaughan out for a full year but it is the same knee so it seems odds on that it's the same old injury.
And, with his propensity for getting crocked, it's becoming a real worry that Vaughan may never reach his full potential.
In addition to his dodgy knee, Vaughan has suffered with, amongst other things, that mad foot injury against Bolton - exactly how do you sevre an artery in your foot on another players boot? - and the worst ever shoulder dislocation, ever, that kept him out for a large part of the current season.
Hopefully, Vaughan will be able to overcome this latest setback and hit the heights with the Blues, just like fellow legendary crocks Peter Reid and Andy Gray.
But the worry is that the Premier League's youngest ever goalscorer could instead go the same way as the World Cup Final's youngest ever player and former Evertonian, Norman Whiteside, who was forced into retirement at just 27-years-old.
And, on a more flippant note, can anyone say the name Whiteside without coupling it with 'onside'? Pfft....thought not!