contract details for lonni Walker ivth with the Celtics sources said exhibit 10 and E10 allows Celtics to give a bonus to Walker if he is waved after training camp and plays for the team's g-league affiliate in Maine Lonnie Walker is coming off a season where he played for the Brooklyn Nets over the summer Walker became a free agent who was available to sign with any team in the league on Wednesday evening ESPN's Adrien wowski reported that he will sign with the Boston Celtics