Maurizio Sarri says Callum Hudson-Odoi is a "great player" but fears excessive pressure could ruin the teenager's promising career.
Chelsea winger Hudson-Odoi, who has been frustrated in his quest for regular first-team football, underlined his potential by stepping off the bench to seal Thursday's 3-0 Europa League win against Dynamo Kiev.
Stamford Bridge fans had called for the talented 18-year-old to be brought on before his 78th-minute introduction and he justified the hype with an impressive cameo.
But Blues coach Sarri once again warned against hastily thrusting Hudson-Odoi (pictured) into the limelight.
"I think to have pressure when you are 18 is very dangerous for a player," said the Italian ahead of tomorrow's clash with Wolves.
"You can lose the target. When you're 18 the target is to improve tactically, mentally and physically.
"So, it's dangerous for him. I don't like to speak about him for this reason.
"He doesn't have to do anything to convince me because I am convinced he is a very great player."
Hudson-Odoi handed in a transfer request in January amid offers from Bayern Munich. He has scored four times this season but is still awaiting his first Premier League start.
"In England, I think he's the only to be born in 2000 to have played 16 matches in the first team," added Sarri.
"A player at 18 years cannot be at the top yet. He needs to improve because he will be able to arrive at the top only at 22 or 23, like every other player."