Atalanta midfielder Teun Koopmeiners has seen a massive offer from Napoli turned down.

The Dutchman's agent has confirmed the bid tabled by the champions.

“I was in Bergamo last week. Napoli made an official bid worth €45m, but Atalanta turned it down. They said that Teun is not for sale this summer," agent Bart Baving told SpazioNapoli.

“They are building a team around Teun and he is their key player. So he will remain with Atalanta this season.

“It was only between the two clubs and Atalanta's message was very clear. Teun is not for sale this summer. So there was no need to negotiate a contract between us and Napoli."