Thats a terrible argument. I'm a fan of the team, not any one player. And I do think he's a top 10 prospect in the world. Statistically, he has the third highest PPG averages for a player at the 18-21 year old ages in the history of the KHL so far, behind Kuznetsov and Tarasenko, ahead of Panarin. If we are to project his NHL potential is somewhere between those two and Panarin, I would say that equals out to a player with way more value than Rakell, so if anything, those that don't know anything about the player are underrating him because most people probably don't pay much attention to the KHL.
Besides, please explain to me why the Rangers are in such need to trade for a 43 point winger who would probably play on our third line?