Exemplary reputation around the league
Having been a one-time all-star in 2014 and working on his second (and rightful) appearance in 2016, DeRozan has shown that he is respected league-wide. His performance is one thing, but his leadership skills have grown immensely in past seasons. Although Kyle Lowry is the main voice in Toronto, DeRozan is not his sidekick, but rather his partner.
There are stories of him calling up rookies after they get drafted (eg. Delon Wright), taking players under his wing (eg. Terrence Ross) and being a likeable person. He has been involved with Team USA for multiple years and even has a World Championship Gold Medal with the mens team.

Why does it matter?
Let’s face it, if you’re a bad apple, you will still get paid, but likely from lesser teams. DeRozan has a clean track record throughout his career and has no red flags about his personality and history. That bodes well for securing a future anywhere.
Next: Everybody is getting paid these days