Islanders send Johnny Boychuk to Sabres for future considerationsBoychuk retired in 2020 after eye injury that required 90 stitches11/4/2021, 7:36 PMRobert SanchezFreelance Editorial ProducerNov 21, 2019; Brooklyn, NY, USA; New York Islanders defenseman Johnny Boychuk (55) and Pittsburgh Penguins center Zach Aston-Reese (46) battle along the boards during the first period at Barclays Center. Mandatory Credit: Andy Marlin-USA TODAY Sports / © Andy Marlin-USA TODAY Sports