The Knicks have waived M.J. Walker and Quinton Rose, who were both signed earlier this week, the team announced (via Twitter). The 24-year-old Walker played for New York’s G League affiliate in Westchester last season and made a brief NBA appearance with the Suns under the hardship exception. Rose, 24, also played for Westchester and was with the Knicks during the Las Vegas Summer League. The moves leave New York with two openings on its offseason roster heading into the start of training camp next week.