That certainly seems to be at least standard Everton practice over the years. Young centre backs, in particular, have to earn their spurs at fullback.
Think this is the article i was talking about mate:
Sean Dyche has a very specific plan to ensure Amadou Onana continues rapid rise
Sean Dyche has been speaking about Amadou Onana ahead of Everton's return to action against Tottenham Hotspur
www.liverpoolecho.co.uk