Your points on Liljegren are valid. That being said, we don't need two of the same type of player, and we already have Liljegren, and he doesn't cost us Nylander to obtain... Lily is also young, and has time to possibly learn, and become better. At this point, Risto, is likely Risto, and unlikely to become much better. The main point, is that in a trade, we need someone who defends well, to offset those PMD that we already have (including Lily), so a trade for a Risto type player doesn't make sense.