WEST Coast has finalised its coaching set-up for 2017, refreshing the group as the club prepares for its fourth season under Adam Simpson.

Former Docker Justin Longmuir has been appointed to the senior assistant role, with champion ruckman Dean Cox taking over as joint midfield coach with Adrian Hickmott.

Longmuir is undertaking the AFL's level four coaching course, after being part of the program's second intake at the start of 2016.

Former player Adam Selwood will head up development, Jaymie Graham will become forwards coach and Daniel Pratt will become backline and team defence coach.

Eagles football manager Craig Vozzo told the club's website that the changes recognised the quality of their staff and supported their development.

"We think from a bigger picture perspective it's pretty important to keep refreshing and innovating and we are big on growing our own people," Vozzo said. 

"Coming into Adam's fourth season it was important we make some tweaks in terms of our structure." 

While Gavin Bell and Mark Nicoksi continue in development roles, the club has appointed former East Perth reserves coach Luke Dwyer as a midfield development coach.

Dwyer combined a teaching job with a playing career with East Perth and Claremont before moving into coaching. 

Luke Webster will coach East Perth in the WAFL and develop the team's forwards. 

The Eagles finished seventh in 2016 after reaching the Grand Final under Simpson in 2015, before losing to Hawthorn.

It had a busy trade period, with the club landing Hawks' legend Sam Mitchell and Geelong tall Nathan Vardy, but they are likely to be without star ruckman Nic Naitanui for most of 2017 following a knee reconstruction.