fill someone's shoes
fill (one's) shoes
To replace one in some role; to take over for one in some position. You do so much for the company that I don't see how anyone could fill your shoes.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
fill someone's shoes
Assume someone's position or duties, especially in a satisfactory way. For example, It'll be hard to find someone to fill her shoes when she retires, or John expects his son to fill his shoes at the store. Also see in someone's shoes.
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
fill someone's shoes (or boots)
take over someone's function or duties and fulfil them satisfactorily. informalFarlex Partner Idioms Dictionary © Farlex 2017