http://www.safc.com/news/reserves-and-academy/2013/december/highlights-from-seven-goal-show? So the under 21 and under 18 squad seem to be producing goals. Can the 1st team do the same?
Probably because the variation of quality is vast in the development teams. Plus factors like The premiership providing a much stiffer standard of quality, there's more pressure and much more at stake for the first team, not to mention months of change, uncertainty and press scrutiny.
