Will it work? I understand what they are trying to do: generate enough internal competition that no one feels comfortable, gamble that the majority of these wonderkids will turn out to be world-class, and if the current team flops, replace it with the "B team" by 2027. It is dangerous, but should Maresca be able to coach them up, then Chelsea could be terrifying deep by the time everyone is still negotiating over left-backs. Then again, if a couple of these high-priced “next Neymars” flop, it will get ugly fast. That is the most Chelsea thing ever
Replace them with B team? I don't think so. It's Chelsea's pattern to be signing many players every season and most of the young lads won't get first team opportunities because of the number of players they've in a particular position. They'll end up being shipped out on loans and some of them will never return back to Chelsea. An example is Kevin De Bruyne. He was signed by Chelsea, only had 3 appearances and was loaned out to Wolfsburg because of limited opportunities. Wolfsburg later made the deal permanent and City clinched him from Wolfsburg and the rest is history.