Only five games separate the 10th-place New York Knicks from the third-place Boston Celtics in the slippery Eastern Conference as of Jan. 7. But if the Knicks want to sink their claws into a playoff berth, they may need to trade for a player who will sharpen their 25th-ranked defense.
The rosters of some Western contenders have embarrassments of riches defensively and rags on the other end.
They might be the likeliest trade partners.
As usual at this time of year, you’ll hear many names get …