change places with (one)
To switch to the spot, role, or position that another person currently is in. I changed places with my aunt so that I could talk to the people at the other end of the table. Many people say that they would gladly change places with a celebrity, but I doubt they would enjoy the constant attention.
change places with someone
to trade or exchange situations or locations with someone. He has a much higher salary, but I wouldn't change places with him for the world. Juan decided to change places with Ken in the bus.