Liverpool defender Mamadou Sakho has criticised former club PSG for letting down supporters.
He believes the club must make more effort to bring players through, and not rely on big money buys.
Speaking to Le Parisien, reported by MaxiFoot, he discussed his disappointment at seeing talented young players who came through the PSG youth ranks plying their trade elsewhere.
He referred specifically to Kingsley Coman, who now plays for Bayern Munich, and Alphonse Areola, who is on loan at Villarreal.
Sakho says PSG must show more trust in their young talent. He said: "I just think it's a shame for Parisian fans.
"There are great coaches who advance super talents. The pool is huge. But today, it's too complicated to develop."
Sakho is speaking from experience, having been forced to leave for Liverpool in pursuit of first team football.
The centre-back had made it through into PSG's first team, prior to their Qatari takeover, but this triggered big money additions of Thiago Silva and latterly Marquinhos and then David Luiz.
It's easy to see why he is frustrated, but the problems are not unique to PSG. Even his current club Liverpool have frustrated fans by failing to give chances to Joao Teixiera, and continually loaning out Tiago Ilori.
Manchester City and Chelsea have also struggled to get players to progress into the first team since they were bought by oil-rich owners, and unless quotas or spending restrictions are more rigorously implemented, the cycle is likely to continue.