Tanganga used to ply LCB in Spurs youth. If we are not playing every weekend, and mid week, and have a few players who can cover different positions (ideally), then you don't need 2 players per position, although its probably many coaches desire.
But if there are not enough games to regularly play players (and 2 players per position means you need a lot of games typically playing weekend and mid week), then players get unhappy at insufficient playing time
........Yet people want to bin off certain comps because of fixture congestion and to "concentrate on the league"!
Of course I speak of a utopia; but so long as we qualify for Europe there's loads of games..... World Cup next season is gonna condense the season even further too; much like Covid and crazy amounts of internationals has over the last 2 seasons.
And; it's not like I'm suggesting we buy any more defenders than we already have on our books.... 2 in/2 out is what I've suggested.