Walker worked at FC Clyde. After the beginning of 1958 to joining Manchester United as Scotland manager undertook parallel Matt Busby had injured disaster in February of the year in the Munich Air, Walker moved on as coach. His first game was a 0-4 defeat against England at the British Home Championship, his first win was 2-1 over Hungary in the final warm-up game for the World Cup 1958. Too, during the tournament, he was responsible for the team, but after two defeats and a draw as a group Last resigned. He then handed over the responsibility to the fit-again Busby and moved back into second place.