It's Chelsea's pattern to be signing many players every season and most of these 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.
This new trend of buying more players than they need and giving them long contracts is Todd Boehly’s doing, it is not Chelsea’s pattern. During Roman Abramovich time, Chelsea didn’t make these kind of signings in the transfer window. It’s the change of ownership that has caused the club to reckless and irrational in their transfer dealings.
Yes, that very strange step when we look at how the management bought a lot players but not to the fullest extent on the squad. They also have habit transfer from Brighton squad, I don't know what the special about that club, because not being so impressive, only as a complement and some of them only fill on the bench. Chelsea should learn from experience not to buy alot of players who are not really needed because of their achievements, not so outstanding just spent money for salary and bonus. Better to buy 1 player, but it so good, and is really needed by the team.