 Celtics had money left over for guard Derek White, four years, $126 million. Sixers retain all-star Tyrese Maxey with a five-year max extension. And former Hornets forward Nick Batum signs a two-year deal, headed back to the LA Clippers after playing last season for the Sixers. Carolina Hurricanes signed longtime defenseman Jacob Slavin to an eight-year contract extension. He's already spent nine years in Raleigh so far.