Van Persie took the young Arsenal winger to one side before departing for Old Trafford and warned of what might happen during a second top-flight season that Oxlade-Chamberlain admits has not been all plain sailing.
"Robin spoke to me last summer. It was the end of my first season and I was on a bit of a high," he said.
"He said, 'Don't get frustrated if you get held back a little bit and things don't go your way so much. It happened to me'."