The Nets announced a series of hires Tuesday to round out Jason Kidd’s coaching staff. John Welch Joe Prunty and Charles Klask were added to Kidd’s staff and the team hired Jim Sann as an advance scout. In addition Doug Overton — who had been on the coaching staff — has been named the head coach of the Nets’ D-League affiliate the Springfield Armor. Kidd’s coaching staff stands at six with the three new names to go alongside Lawrence Frank Roy Rogers and Eric Hughes. Welch’s hire has been a formality since summer league where he was an active presence on the bench. He spent the last eight seasons as an assistant coach under George Karl in Denver. Prunty meanwhile has spent 18 years in the NBA as an assistant coach including the last three in Cleveland under former Nets coach Byron Scott and Klask spent the past two seasons working under Frank and alongside Rogers in Detroit. Sann who is from Larchmont previously worked for the Nets from 2005 through 2010.