Manager John Sheridan has welcomed Tommy Wright back to the club to help out with pre-season training.
The 51-year-old joins the backroom staff to put the squad through their paces ahead of the 2017/18 campaign.
Wright has previously worked at the club under manager Lee Johnson and with current manager Sheridan from 2006-09.
The pair have also had success together whilst at Chesterfield when they were crowned champions of League Two in 2010/11 and won the Football League Trophy in the 2011/12 season.
The Scot joins Richie Wellens and John Harbin who are also working with the squad over the pre-season campaign.