Mueller joins the Lions after a four-year career at the University of Wisconsin. Mueller was an All-Big Ten First Team selection in 2016 and 2017 and was named 2017 Big Ten Offensive Player of the Year after leading the nation with 20 assists and posting nine goals in 21 appearances. Mueller had a goal and an assist in Wisconsin's 4-0 win over Michigan in the Big Ten tournament before the Badgers defeated Indiana to capture the 2017 Big Ten title.
Mueller was a USC Second Team All-American in 2017 and a Third Team All-American in 2016, becoming the first two-time All-American in Wisconsin history. He finishes his collegiate career eighth in school history in goals (22) to go with 35 assists in 75 games.
The Schaumburg, Ill., native played nine seasons at Sockers FC Chicago Soccer Academy.