Over the past four years, Willman has been part of the Flyers' organization, spending the majority of his time with their AHL affiliate, the Lehigh Valley Phantoms. Despite primarily playing in the minors, he managed to make appearances in 50 NHL games, including nine games in the previous season.
During his stints with the Flyers, Willman contributed four goals and two assists, accumulating six points. Hailing from Barnstable, Massachusetts, he honed his skills playing college hockey at Brown University and Boston University before making his professional debut in the 2019-20 season.