Reports in Italy on Saturday claimed that the Serie A side were set to make an 8million euros offer to secure the services of the highly-rated 22-year-old midfielder.
And while Overmars has revealed that Napoli have expressed an interest in signing Klaassen, he is adamant that the player is staying in Amsterdam.
“It’s true, Napoli have shown very strong interest in Klaassen, but we won’t sell Davy,” Overmars told Voetbal International.
David Artell could not hide his frustrations as Crewe surrendered an 88th-minute lead to lose 2-1 at home to Exeter in Sky Bet League Two.
Antonio Conte felt Chelsea had come close to playing a 'perfect game' against Barcelona.
Portsmouth manager Kenny Jackett hopes his side can build on victory over struggling Fleetwood as they bid to climb towards the play-off places.
Barnet boss Graham Westley described his side's 3-1 loss to Carlisle as 'a devastating result'.
New Barnsley boss Jose Morais is convinced his team can survive in the Sky Bet Championship despite seeing them slide to defeat against Burton.
Interim head coach Joe Dunne was full of praise for Cambridge after the 1-0 victory over promotion-chasing Notts County.
Brentford head coach Dean Smith hailed the 'hunger' running through his team as the recipe for their 5-0 rout of strugglers Birmingham.