Cushing was in the concussion protocol this week and had already been ruled out for the Thursday Night Football game against the Cincinnati Bengals.
Cushing previously was suspended four games in 2010 for testing positive for HCG, a fertility drug that was on the NFL's banned substances list.
Man Utd boss Mourinho rejects Jones criticism after Stoke draw
Stoke have half of United's points haul, collecting five from four games. "We'll never just sit back and wait for the inevitable. And your question is not correct, I am sorry". "You could argue United played more long balls, and why wouldn't they?"
Cushing, 30, received a four-game suspension in 2010 for his first violation of the league's PED policy, and he is now in the NFL's concussion protocol following Week 1.
The former NFL Defensive Rookie of the Year has amassed 421 tackles, 240 assists and 12 sacks in his nine-year NFL career.
In 2011, he was named second-team All-Pro.
Chip and Joanna Gaines partnering with Target on new Magnolia brand
Items such as vases, dining sets and other home decor items will mostly be priced at less than $30, according to Target leaders.
The 2017 National Football League season has gotten off to a rough start for the Houston Texans. But it's still not ideal for a Texans team that looked horrendous in a Week 1 loss.
Jon Jones' B Sample Confirms Failed UFC 214 Drug Test
UFC has yet to announce its future intentions for the title belt and ruled it won't strip Jones until due process is completed. Because this is Jones' second potential anti-doping violation, he does not arrive at the negotiating table with a clean slate.