Cammalleri mustve been an ass to his teammates in LA. Not saying thats what happened but I remember a little arrogance while he was in montreal. Proud professionnal, a little too cocky.
Rishaug had a good take on this trade this morning. Cammalleri was brought in to play top six minutes, likely with Kopitar and Brown, but Iafallo won that job. With Iafallo, Pearson and Andreoff in the top 9 for LW, and Brown, Toffoli, Lewis on the right side, and eventually Gaborik returning, it really depends on what type of player you would prefer on your fourth line. An offense first shooter like Cammalleri, or a well-rounded guy who has been struggling offensively but has always been responsible defensively in Jokinen. Makes sense for the Kings in that regard, Jokinen in a checking role should work better.
The Oilers on the other hand, needed Jokinen to produce more, and he wasn't, so why not move him for a guy who, while well past his prime, is still a good shooter and has offensive instincts that Jokinen has never had. Until the last two games, the Oil have been desperate for scoring from their bottom six, with guys like Pakarinen (who I love for is work ethic but has next to no offense in his game), Khaira (who hasn't established himself as a full time option yet) playing third line with Strome, who has also been underachieving, it isn't hard to see that Cammy could be an important upgrade. Cammi - Strome - Slepyshev (when healthy) has a lot more scoring potential than our other bottom six options.
Makes sense for both teams if you think about it.