Which basketball player had his jersey retired by both the Baltimore Bullets and New York Knicks, and averaged a team high 20.7 points for his team during the 1975-76 NBA season?
1975–76 New York Knicks season:  In the regular season, the Knicks had a 38–44 win–loss record, finishing in fourth place in the Atlantic Division and failing to qualify for the 1976 NBA Playoffs.
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