Washington was suspended for at least one year in 2014 for violating the league's substance abuse policy.
"I don't even think about him. He's not a part of our team until he's reinstated," Arians said during Thursday's combine press conference.
Washington was suspended for the entire season after a repeat violation of the league's substance abuse policy. He remains on probation for a domestic violence incident in May 2013.
Washington remains on probation for a domestic violence incident in May 2013.
He had 75 tackles and two interceptions while playing 12 games in 2013.
"It's completely unacceptable that Daryl has once again put us in this position," Cards general manager Steve Keim said in a statement. "We all know what the consequences are and will deal with them. From a personal standpoint, our hope is that this suspension will give Daryl the opportunity to accept the necessary help and guidance to get his life back on track and we will certainly support him however we can."
Washington had 134 total tackles and nine sacks in 2012 and 75 total hits and three sacks in 12 games last season.
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