I actually think this is a case of chinese whispers. I think journos have put 2 and 2 together and got 5.
The reason why was because of a quirk of my twitter feed showing me 3 stories about him in the row.
The first two were about Nigeria wanting to poach him from England before he got a senior cap and the 3rd was about linking him away. it went:
1) Nigeria want to cap Lookman
2) Super Eagles want to poach Lookman
3) Crystal Palace looking to target Lookman in January
I properly think some moron has conflated super eagles (Nigeria) with eagles (Palace), ran the story and then every other outlet has gone with it.
A denial may or may not have come in from Palace to the newspapers, but now it is in their minds that he is looking to move/we're looking to move him on/clubs want him.