"We are thankful for the contributions Barry made during his time with the club. Unfortunately Barry and his family never fully settled in Vancouver, and we've mutually decided to move in different directions," said Whitecaps FC president Bob Lenarduzzi.
"On behalf of the club, I wish Barry the very best in the next stage of his career."
Ex-Inverness, Dundee United and Celtic man Robson added: "Thank you to my teammates, coaches, staff, fans, and media for making my experience in Vancouver enjoyable. I am now looking forward to returning home and beginning the next chapter in my career."