As a point of order Gomes was around 24 just turning 25 when we signed him, but the point is granted on Bernard.
I think 23-25 is a good age group for us to target as players. People who there should be some improvement (potentially substantial improvement if they have fallen by the wayside at a "top" club) but also a much higher ceiling in terms of levels of performance and consistency than you might get from someone who is under 20.
I've had a little look at the league table, and demographically we are currently 5th for the youngest sides in the league, and I suspect we will be in the top 4 by the end of the season. We have a young squad, but it's not recklessly young.
There has to be some degree of realism to the discussion. We are not going to become Leipzig. Not when you have an owner that clearly wants very quick success.