Pretty bad example, considering how phenomenal Isco has been this season.
The reason I think it's wise is not because of money. It's because he can develop there. Since when is it crucial for boys who have just turned 16 to play first team football? Nobody here is complaining or saying that Zelalem or Crowley needs to get out of Arsenal. Ødegaard is reportedly given a place in their squad, which means he will train with Ronaldo, Benzema, Modric, James, Kroos etc. everyday. At 16, I'd rather have him doing that than playing for Burnley or something.
And Rampage, his match against Rosenborg was his worst all season.
Anyway, the link I posted was from VG, Norway's biggest newspaper. DT (the local newspaper from where Ødegaard is from) is now basically saying that the VG article is a piece of crap. I definitely trust DT on everything Ødegaard related. This is just another one of his many club visits.