groom as

groom someone as something

to prepare someone for a job or position. He was grooming his son as his successor. They groomed Charles as the next treasurer.
See also: groom
References in classic literature ?
Sam thought he might as well talk to this groom as to any one else, especially as he was very tired with walking, and there was a good large stone just opposite the wheel-barrow; so he strolled down the lane, and, seating himself on the stone, opened a conversation with the ease and freedom for which he was remarkable.