The Serie A side have confirmed their interest in signing Manchester United midfielder Marouane Fellaini
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Swansea City have completed the signing of Argentine defender Federico Fernandez from Napoli.
The centre-back has penned a four-year deal with the Welsh club.
Napoli coach Rafael Benitez remains confident his side can see off Athletic Bilbao to reach the group stages of the Champions League.
The Italians were held to a 1-1 draw by the Primera Division outfit on Tuesday evening in Naples and have left themselves with plenty to do in Spain.
– Rafa Benitez speaking to Gazzetta dello Sport
Athletic will certainly go out there to win. This means they will want to score and so do we.
I have confidence but of course it will not be easy.
We saw the game I expected to see Considering the way the game went, we can consider our reaction positive and we must begin again from that.
Athletic Bilbao will have the upper hand back at San Mames after holding Napoli to a 1-1 Champions League play-off draw on Tuesday night.
The Primera Division and Serie A giants were pitted against each other in a battle to reach the group stages and Athletic took the initiative with Iker Muniain scoring four minutes before the break in Naples.
Napoli hit back after the interval as former Real Madrid striker Gonzalo Higuain fired a leveller on 68 minutes but the Basque outfit will fancy their chances of winning the second leg and progressing to the next stage.
There were five goals in the first half of action in the Danish capital as Bayer Leverkusen claimed a 3-2 win at FC Copenhagen.
Stefan Kiessling (five) and Zanka (nine) exchanged goals before Daniel Amartey nudged FCK ahead in the 13th minute.
Bayer equalised through Karim Bellarabi on 31 minutes and, three minutes before the break, Son Heung-min grabbed what proved to be the winner for the Bundesliga giants.
Napoli coach Rafael Benitez has warned his side not to underestimate Athletic Bilbao when the two sides meet in Tuesday's Champions League play-off in Naples.
– Napoli boss Rafael Benitez speaking to MARCA
We will face a great team and the second leg will be in an incredible (San Mames) stadium. The (San Mames) crowd is like their 12th man.
Athletic's strongest weapon is the group, with players who have been together for many years and have the support of a city that never loses its passion.
I respect Athletic Bilbao a great deal, but I trust my Napoli.
Napoli coach Rafael Benitez has rubbished speculation that Jose Callejon could join Atletico Madrid this summer by insisting there is "no chance" the Italian club would sell the forward.
Primera Division champions Atletico were among the clubs reported to be chasing the 27-year-old, who enjoyed a stellar first season in Serie A last term and scored 20 goals in all competitions following a 10million euro (£8m) move from Real Madrid.
Reports that Callejon wanted to seek a return to the Spanish capital grew after Benitez removed the player from a training session on Sunday, but the former Chelsea and Liverpool boss has denied a rift between himself and his fellow Spaniard.
– Napoli boss Rafa Benitez.
It was very simple, he was training without intensity, but there was no problem.
I wanted to bring him here, he scored 20 goals and I would have liked to have seen him called up to the Spanish team.
The coach hinted that Atletico had expressed interest in signing Callejon, but revealed Napoli had turned down their offers.
A team made us several large offers for him but we rejected them, we don't want to sell him and there is no chance we will.
Napoli forward Jose Callejon has revealed the club turned down a big money offer for his services from Spanish giants Atletico Madrid this summer - and is pleased they did.
– Jose Callejon speaking to Gazzetta dello Sport
My agent told me about it.
I was glad (the bid was rejected) because I really want to play in this shirt and have another four years on my contract. I feel good here, I feel the affection of the people.
In football, never say never, but with (Napoli boss Rafael) Benitez I have my freedom and I do not want to give it up.