Celtics send Kemba Walker, 16th pick to Thunder for Al Horford
76ers reportedly send Al Horford, future 1st-rounder to Thunder for Danny Green
Al Horford, Philadelphia 76ers agree to four-year, $109 million deal - Sports Illustrated
Thunder Wins Celtics Trade, Getting Kemba Walker, Pick For
Report: Sixers Sign Al Horford, Acquire Josh Richardson In Sign-And-Trade That Sends Jimmy Butler To Heat - CBS Philadelphia
Boston Celtics send Kemba Walker, No. 16 pick to Oklahoma City Thunder for Al Horford – Hartford Courant
Philadelphia 76ers: Al Horford continues to damage his trade value
Sources - Philadelphia 76ers sending Al Horford, two draft picks to Oklahoma City Thunder for Danny Green - ESPN
Al Horford Q&A: Why the Celtics star is fine with sky-high expectations - Sports Illustrated
Philadelphia 76ers: Preview of realistic Al Horford trade scenarios
Sixers Make Al Horford for Danny Green Trade With Thunder Official - Sports Illustrated Philadelphia 76ers News, Analysis and More
Celtics Send Kemba Walker, 16th Pick To Thunder For Horford