City academy chief Jim Cassell has welcomed Welch to his coaching team. He was responsible for the development of coaches with the Professional Football Association before moving to Leeds United.
He later joined Manchester United and worked at Royal Antwerp.
"Andy has worked extensively within youth football throughout his career and we are delighted to have him with us," said Cassell. "Not only will he fit in easily into our existing structure but we hope he will be part of our Academy development for many years to come."