Trading for Erik Karlsson is a complicated process made even more complicated by the Ottawa Senators insisting that teams take winger Bobby Ryan as part of a deal. This has been a persistent theme since the trade deadline when the Vegas Golden Knights almost acquired the duo. As far as I've heard the Stars aren't taking Bobby Ryan back despite that likely being the easiest path to completing a deal, and they have good reasons not to want any part of Ryan.But, they should strongly consider taking Ryan back if that's what it takes to get Karlsson.Ryan is a 31 year old winger and was the #2 pick in the 2005 draft behind Sidney Crosby.