‘Clifton comes to Buffalo on a contract worth $10 million over three years after anchoring the Boston Bruins’s top-ranked penalty kill unit. Clifton led all NHL defenseman last season in allowing 2.34 power-play goals per 60 minutes. The 28-year-old fills the Sabres’ need for a reliable right-shot D-man capable of playing alongside dynamic No. 1 draft picks Rasmus Dahlin and Owen Power.’