Coman worked his way through the ranks at PSG and was considered the next big star for the club, however, the youngster made only three appearances for the French giants before moving to Juventus on a free transfer last summer.
The 19-year-old has recently flourished after joining German giants Bayern Munich on a two-year loan deal and is touted to become a world star in the coming years.
Sakho said on Canal Football Club: "I think it's a shame for Paris. He's a quality player who was there in Paris and was not given a chance.
"Everyone has their own policies but when I see a talent like that, who cannot emerge and express himself in his own city – and it's also a source of pride for the fans to see a youth product play in their colours – it's unfortunate."