A banner displayed in Arsenal's supporters section at West Brom read: "Arsene, thanks for the memories but it's time to go."
Asked about the banner at his postmatch news conference, Arsene Wenger said: "I don't comment on that."
When asked once more, he replied: "Do I need to say it again? I don't comment on your question."
"The job of every person who has responsibilities is to prepare the future always," he said later.