he felt, thought that's as far as he could take him AND he never thought he could have the chance to get Matthew. The little nuances that Matthew has are not necessarily coached or developed. IMO IF Matthew was not available to him I really think Goff would have stayed, maybe an awkward situation, but he would have stayed.
I don't see how you can't say he developed (helped him) from his previous season to his being named HC.....From a dismal, very lacking rookie year to a SB in year 2? Again I can't dismiss creating a scheme is equivalent to development of a player.