Brescia President Gino Corioni still has regrets over his decision to sell Marek Hamsik to Napoli in 2007.
The Slovakian was sold by the Lombard outfit for €5.5m back then and he's now worth at least five times that amount.
"I regret letting Hamsik go to Napoli for such a low price," Corioni told Radio CRC on Wednesday afternoon.
Hamsik was rumoured to be a €30m target for Milan this summer, but the attacking midfielder will remain at the San Paolo.
"He's made the right decision in staying at Napoli because that club want to construct a great side," the Brescia chief added.
"Hamsik is not a top champion, but he is still irreplaceable. Players with his characteristics should not be sold."
The international today celebrates his 24th birthday.