Bobby Jackson was known for his competitiveness and work ethic during 12 years in the NBA and collegiately at the University of Minnesota. It would appear not much has changed with Jackson as an NBA assistant coach. The former Gophers star recently hired by the Timberwolves as a player development assistant coach has been conducting two-a-day training sessions at Target Center for Chase Budinger coming off knee surgery and rookie draft picks Shabazz Muhammad Gorgui Dieng and Lorenzo Brown. Wolves coach Rick Adelman had to pass on some advice to his newest assistant Sunday. “He called to say I was working the guys too hard” Jackson said Monday as he met media at Target Center. “He said ‘I want them to have some legs when training camp starts.’ I had to cut the workouts to one a day.” Jackson’s move was part of a shuffle in the Wolves’ assistant ranks. David Adelman one of two player development coaches last season was promoted to assistant coach. Shawn Respert the second of the team’s player development coaches last season did not have the option on his contract picked up.