Boufal joined Southampton from Lille for £16 million. His coach wants to patient with the young player, who has been injured.
"Boufal, of course, scored a fantastic goal. It was an important goal because it gave us a good result, it's important for the squad, it's important for him after five months out," he said.
"It was important for his confidence to score this goal and to come back. All is not perfect because it's just the start of his comeback, but we must be patient with him because he can come back step by step".
He added: "For his first possibilities on the team, it's very interesting to see him and now all the people can see his qualities. But it's important to keep him at a good level and he can participate with moderation, he cannot play every time".