It has been a busy offseason for the Oilers. Jack Campbell is their new starting goalie while they parted ways with Duncan Keith (retirement) and Zack Kassian (trade). They were able to re-sign Evander Kane, got new deals done with RFAs Jesse Puljujarvi and Kailer Yamamoto, and had enough left over to add Mattias Janmark. All in all, not a bad summer for GM Ken Holland. However, he told TSN 1260 (audio link) that he might not be done with his offseason work just yet: There are some players out there that I’m still kind of looking at for the…