NHL GM's don't value rattie the way fans like us do because he still hasn't proven anything at the NHL level. his value is much lower than it would be if he played in the show this year and put up 20 or so goals etc..
I'm glad we haven't called him up yet because he seems to be developing very nicely and scoring goals in the AHL so why rupture that when he atleast at this point probably isn't an upgrade over the current 3rd line players we have atleast role wise...... also, the AHL let's alot more **** go than the NHL, so he has to fight through more **** to go to the net, come out of the corners with pucks, which will hopefully help him when he does get his next NHL shot to show coaches he's more than just a goal scorer.