Would 49ers gamble on risky but talented WR Green-Beckham?

Daily 49ers blog for NBC Bay Area website: The 49ers say they want high-character players. But might they be tempted to take talented wideout Dorial Green-Beckham with the 15th pick, a player with off-field issues? http://www.nbcbayarea.com/news/sports/In-Draft-49ers-Character-Values-May-be-Tested-294387741.html