Question: The 1989–90 NBA season was the Bulls' 24th season in the National Basketball Association, despite their solid playoff run last year, the Bulls fired head coach Doug Collins and replaced him with who, a former American professional basketball player, coach and executive in the National Basketball Association (NBA)?
Sentence (from "1989–90 Chicago Bulls season"): They advanced to the Eastern Conference Finals before losing a seven-game series to the eventual champion Detroit Pistons.
Relevant evidence: No