Obviously there is nothing to be excited about in this transfer. He can be a pleasant surprise at most but what else should be expected of a player that costs 2+6 mln these days?
Rincon can be underrated because of his role on the field and the fact that he played for Genoa, typical mid-table team. He could be compared to Marchisio in that regard. Very few football fans see him as top midfielder (maybe that changed a bit now) yet a lot of managers have been praising him for years. A minority of football fans worldwide actually knows a thing or two about football, that's why some players that are extremely useful on the field tend to be disregarded. As I said, Genoa is a typical mid-table club that few people follow. Maybe if we were on an Italian forum, the praise for Rincon would be bigger.