Transitioning An Outdoor Dog to Indoors?

Hi guys,

I've been to view a lovely dog today who is almost 3. She was supposed to be a sheepdog but she's not cut out for the job so they are trying to rehome her. She's got a lovely temperament, the only issue is she is caged outside.

I'm worried about how she would adjust after spending almost three years outside to living in a home. She's smart and young so hopefully she would adapt quickly but does anyone have any experience with a similar situation?