As the squad travelled to South Africa, the big defender took a plane to Munich and a meeting with Dr Hans Muller Wolfhart.
"It's something I had last season as well and I wanted to try and nip it in the bud early rather than aggravate it again," explained Dean.
"It's a problem I felt at Southampton so I've had it quite a while now. It just comes and goes. It's been bugging me so we felt it would be better to get it looked out now and get it sorted.
"I went to see Dr Wolfhart who has seen Darren, Christian and Jamie in the past as well and comes highly recommended.
"He gave me a few injections in the Achilles and it feels muchg better.
"I've got to let it settle down for a couple of days and I start running again on Monday."
Dean Richards has targeted a return to training on Monday after treatment on his troublesome Achilles.