Frank Lampard is confident Ethan Ampadu will benefit immensely from a loan spell with RB Leipzig.
The 18-year-old's move to Germany was confirmed on Monday.
Lampard wanted to use Ampadu this season at Stamford Bridge, but understood the Wales international will get more playing time in the Bundesliga.
He stated: "I tried to sign Ethan on loan at Derby last year so I'm a big fan, but with the minutes he played last year, in the interest of Ethan and of Chelsea, the idea he can play a lot of games somewhere could be good for him.
"I really wanted to work with Ethan this year.
"That's a slight disappointment, but it's to benefit of him. In midfield and defence, we have a lot of quality, so each player is a case by case."