He probably had other options than Chelsea back then, it's not as if Chelsea are known as some sort of unique club for spotting talent.
And it isn't that you " bury phenomenal young talent", it's just your treatment of young players in general.
Who's careers did you stall? I'll go through the list..
Branislav Ivanovic - If it wasn't for Scolari, he'd have been buried and long sold. How long did it take him to make one appearance? this despite the fact Chelsea paid 9 odd million for him. He was almost 24 when signed, hardly a youngster and has been a starter for years now. Odd choice.
Daniel Sturridge - Speaks for itself. Already mentioned, but have to add that his time at CFC was also marred with frequent injuries. But still, wasn't given a chance, I agree.
Ryan Bertrand - Where is he? Ashley Cole is finished but what do Chelsea do, they play a right full back at left back instead. He was out injured the same time Cole was. He's back now, but I feel, Mourinho doesn't rate him. May move on in the summer, but I'm sure he'll consider the Europa League and CL (played in the final, btw) medals as a highlight of his career one day, if he leaves us. He'll do well to come close to reaching those heights again somewhere else.
Gael Kakuta - Illegally signed from Lens about 500 years ago, spent the last few years being thrown around Europe on loan. Great potential, didn't work out.
Scott Sinclair - Pissed him about for years. Scottie has done well for himself, considering that he was never a top club material. Great speed, not much else.
Tom Taiwo and Michael Woods? Bebe?
It's not as if these guys were or are in their teens or anything, most are or were in their 20's.
I get that the demand to be successful is the main reason Chelsea never give a chance to young talent but then why spend so much money on these players only to shaft them out on loan every year when they're well into their 20's, it doesn't help them progress. You stop other clubs from getting these players, you stop clubs from developing these players and then you treat them like shit and if you can't see that then you're deluded. Take your head out the sand.
I wonder what lies for Josh Mceachran and Nathaniel Chalobah, two very talented players, with Lampard ageing, surely you'd think it would be a perfect opportunity to give either a go, will Chelsea? will they feck? Chalobah is still very young and raw, he's at Forest on loan and is nowhere near ready to play in the PL, let alone start for Chelsea. Mourinho thinks very highly of him. Josh has regressed, I'm afraid. He always struggled with the physical side of football.
It's well known that Chelsea treat young players badly, I'm not even coming up with anything ground breaking here. It's just years of evidence.