Heerenveen striker Bas Dost is reportedly delaying a move away from the Dutch club as he awaits an offer from the Premier League.
The highly-rated forward has attracted attention from a number of European teams following a 32-goal season in the Eredivisie.
"Many clubs like Dost. There is a lot of appreciation for the boy but it is too early to mention names," said Coviello.
"Heerenveen are asking for €10-12m for him. His price has increased after a sensation season in the Eredivisie.
"He is wanted in the English market, having recently said no to Aston Villa. There are also requests in Germany, but Dost is waiting for an important offer from Italy or England."