If the owner wants you back, see how high he'* willing to go on your pay.
Many years ago, I worked for a pizza joint. Started out on the phones taking orders, ended up running the place when the owners didn't want to be there. I spent about four years there, off and on. I went to college a thousand miles away, and worked for Starr whenever I was home.
I got fired three times, and was never gone for more than three days. AND I always got at least a $.50 bump when they called to ask me back. That was the only way I could ever get a raise.
Don't go back for the same money.