Rodrguez is the stuff guy, Owens is the feel guy. Owens seems much more likely to have a good career, Rodriguez seems to have a higher peak. It is an interesting discussion. As far as trading? My tiers look like this
1. Never say never but: Betts, Bogaerts, Swihart ... need controllable Major League quality, and that might not even be enough
2. This better be good: Owens, Rodriguez ... has to facilitate a good return. Due to inherent injury risk, I'm always more willing to move pitchers than hitters in the farm. But raising pitching is the best way to get it.
3. Kids who will make me look bad: Margot, Devers, Chavis, Travis, Ball ... just so young, and for a team with the Red Sox timelines, it might not be worth it to wait 3 years when a proven 2015-2016 solution might be available. One of these guys could blossom for another team and break my heart, but it might be a price worth paying to complete a key deal.
4. Trade fodder: Johnson, Barnes, Cecchini, Coyle, Merrero, Escobar, Shaw ... upside limited, but all have fans among some of the player evaluation population. Star potential low enough (and they are close enough to AAA) that you deal them to make the big club better without worrying too much