Larranaga, 43, is a rising young coach, who has been with the Celtics for six seasons, the last four as Brad Stevens’ top assistant. Larranaga was considered for the Celtics’ job before they hired Stevens, one of the best coaches in the league. He has interviewed for head coaching jobs in Philadelphia and Memphis previously. The Celtics have reached the postseason for four straight seasons, and had the NBA’s top-rated defense. One of Larranaga’s strengths is a Knicks’ focus now: player development. He spent two seasons coaching the Erie BayHawks, which was the Knicks’ Developmental League affiliate before they purchased their own team in 2014.