Khazri is still a Sunderland player after signing a four-and-a-half-year contract at the Stadium of Light.
He said: "It's not easy for a Tunisian to play in the Premier League, so I feel privileged because of the opportunity I've had.
"Now I am focused only on the World Cup, but I would like to continue playing in English football if I can.
"We'll see. I will be open to all ideas and listen to everything."