Being logical about this, if you get three points, you must have got 15 goals. I think that the goals have to be awarded for any potential tie-break situations, be it season's goals or goal difference.
The question is really about how many goals the forfeiting team should be awarded. I say that it should represent a worse case scenario, which would be nil. However, given that they get -1 point, I'm also inclined to say they should receive -5 goals.
As to which I think is right, I'm not too sure about. I'm leaning towards the -5 goals for consistency.
I can't personally think of a substantial argument against that.
I can't personally think of a substantial argument against that.