Taj Gibson told The Post in August his chief job as a new Knick was to mentor center Mitchell Robinson. But the 34-year-old defensive bruiser hasn’t forgotten about the Knicks’ other big man, former Bulls teammate Bobby Portis.
Portis, 24, cited Gibson as one of his first mentors when they were together in Chicago his rookie year. The Knicks thought enough of Portis to lavish a two-year, $31 million deal (the second is a team option) on him.
“I had great veterans in front of me that really showed me the ropes,’’ Portis said of his Chicago days.