In the Modern game FB's are such an important position. Vyner has the defensive ability, but not enough going forward. Probably the exact opposite of Dasilva on the other side who is good going forward, but defensively a bit weaker than Vyner. To get that perfect balance is rare. Baker is not a FB, nor Kalas. They should only be used in specific games, like Cardiff when NP wanted to match their height. The FB position for city this year is certainly interesting.