Islanders lose Valtteri Filppula to the Red Wings in free agencyFilppula returns to Detroit, where he won a Cup in eight seasons7/1/2019, 8:12 PMFeb 10, 2019; Brooklyn, NY, USA; New York Islanders center Valtteri Filppula (51) skates with the puck against the Minnesota Wild during the second period at Barclays Center. Mandatory Credit: Dennis Schneidler-USA TODAY Sports / Dennis Schneidler