Carter’s No. 15 will be the seventh retired jersey to hang inside Barclays Center, along with the late Drazen Petrovic (3), Jason Kidd (5), John Williamson (23), Bill Melchionni (25), Julius Erving (32) and Buck Williams (52).  “I remember obviously watching him play from the Toronto days, the Jersey days, then I was already in the NBA at that point after that,” coach Jordi Fernandez said. “You don’t realize that he played for 22 years. He went from being like a top guy to having a different role and accepting that role and that means a lot….Honoring his career and putting his jersey up there, I think, is the least we can do and we’re excited to honor his legacy.”