Mitchell admitted the Stormers proposition was attractive but he wanted a four-year deal. He was also concerned that the Stormers director of rugby Gert Smal was contracted for two years and worried that Smal could be tempted away to a bigger job with the Springboks, leaving Mitchell vulnerable.
"There were no guarantees for me beyond that period. Had I been offered a four-year deal, it would have been different. But I have travelled around the world a lot to pursue my career as a coach and didn't want to uproot my family again for the promise of just two years," Mitchell, who is based in Durban, told Supersport.com.
"I can work with Gert but I have been in a situation before where I signed up a coach to work with a director of rugby and then it never happened and I was left on a limb," Mitchell added of his time at the Lions that ended in an uncomfortable exit.