The point is that Milton as back-up QB is worth much more than a 5th round rookie, even if its another QB
Milton has showed promise that other guys taken in these rounds dont, even if its very limited exposure to NFL quality.
Not too long ago people were asking for a 2nd and/or 3rd for him (i pegged a 3rd back then)
In general, A 5th round rookie is a borderline roster player, Milton was already the QB#2
This is a very weird trade, Ross, unless the managent is sure of something not known publicaly