Reshad Jones has received a four-game suspension for violating the NFL's performance-enhaning drug policy.
Jones had 107 tackles and one interception last season as the Miami Dolphins starting safety.
"I was very disappointed when we found out about Reshad's suspension," coach Joe Philbin said in a statement. "When we talked to him, Reshad pledged to learn from this situation.
"Our secondary as a unit, including Reshad, has performed well this offseason and I have complete confidence in the group as we progress through training camp and into the regular season."