earlier this week Spurs guard Devon vassel was puzzled as to why Lonnie Walker for was still a free agent well the Boston Celtics shared his sentiment and have now signed Walker to an exhibit 10 training camp contract as reported by Adrien wowski of ESPN so what does this mean an exhibit 10 contract allows Walker to join the Celtics training camp if he doesn't make the final roster he could still earn a bonus by signing with the Celtics g- League affiliate the main Red Claw last season this bonus could be up to $775,000 if Walker makes the team he'll add some much needed scoring depth on the wing for Boston as they gear up for the long season ahead the Celtics currently have 14 guaranteed contracts leaving one more spot open however given their deep dive into the luxury tax they might keep that spot open for financial flexibility or for future trades vassel was right Walker's availability highlights just how competitive the market is despite a solid start with Brooklyn last season a neeat injury sidelined him for a month and he struggled to regain his form by seasons's end interim coach Kevin oi wasn't relying on him as much Walker is a capable NBA rotation player who deserves at least a guaranteed minimum contract if Boston is that place the defending Champions just got a whole lot stronger with this potential steal of a contract