Just 18, the Swiss teen has stunned pundits with his assured performances since his first team breakthrough.
"This season so far has changed my life," Frei told fulhamfc.com. "I'm very happy with how it is going but I know that I need to keep working hard because there's still a lot to play for.
"I think seventh place in the League is a realistic target. We are a very good Team so we can keep climbing the table. We just have to keep working hard and then hopefully everything will be good."