Roy issued a statement through the team shortly before they played the Phoenix Suns on Saturday night. Roy had arthroscopic surgery on his right knee in November after playing in five games and had recently returned to practice. But Roy says he had a setback recently that requires more attention.
Roy spent the last few days contemplating retirement before deciding to keep going.
Team president David Kahn says it will likely take three to four weeks before it can be determined if the unspecified treatment will help. Kahn says the team is "hoping for the best, but preparing for the worst."
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