Northampton assistant coach Steve Williams will leave his post at the end of the season. The former Wales international played two seasons for Northampton before turning to coaching last summer.
"Steve has been fantastic for us this year and has been a huge part of the development of the team," Northampton director of rugby Budge Pountney said.
"He has been exemplary in his attitude. We wish him the best for the future and he will be welcome back any time."