Nothing too wrong with Holding and he's done great work for us, including in that five-at-the-back regime Arteta likes to use when we park the bus.
Gabriel, Saliba, White, Tomiyasu, Holding, we've had legendary centre backs, but I question whether we've ever had this much depth in the position, albeit with a few of those players expected to cover other areas. If I were Rob Holding I'd be thinking about a move to be first choice somewhere.