The Belgium international has enjoyed an excellent campaign at Everton, on-loan from the Stamford Bridge outfit, and scored the second goal in the Merseysiders' 3-0 win at St James' Park on Tuesday.
With Tottenham reported to also be showing an interest, Pardew has admitted that Newcastle would be keen on landing the 20-year-old.
"I think he is a player a lot of clubs will be looking at in the summer. I don't think Everton will get a free run at him," Pardew said ahead of the defeat to Everton.
"At the moment, it is a bit like we are with Loic (Remy). It is a situation that Everton would love to keep him, as we would with Loic, and those questions are really out of Everton's and our control."
Meanwhile, three players who will be on Tyneside beyond this season are youngsters Adam Armstrong, Freddie Woodman and Lubo Satka - who have all agreed their first professional deals with the club.
Striker Armstrong and goalkeeper Woodman are both 17, whilst Slovakian defender Satka is 18.
England youth star Armstrong has already made his Premier League debut, whilst Satka has also been involved in the first-team in recent weeks.
Newcastle announced the deals whilst also confirmed their Academy has been awarded Category One status - the highest ranking under the Premier League's Elite Players Performance Plan (EPPP).
"Being a Category One Academy is extremely important in terms of looking to the future and giving young talented players the best possible chance of succeeding at Newcastle United," said Pardew.
"I know our supporters love to see young players like Sammy Ameobi and Paul Dummett come through, and that's why I'm pleased to see Adam, Freddie and Lubo sign their first professional contracts.
"This is only a first step on the career ladder for these boys and they must continue to show the same commitment and desire and will to learn as they have to this point."