The Boston Celtics signed Lonnie Walker IV to a one-year deal. (Adrian Wojnarowski on Twitter)

Free agent G Lonnie Walker IV has agreed on a one-year deal with the Boston Celtics, his agent George S. Langberg of GSL Sports Group tells ESPN. Walker IV averaged 9.7 points and shot 38% on three-pointers in 58 games for Brooklyn last season. pic.twitter.com/uAvrtsIQkD

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