Arizona Cardinals star running back David Johnson is likely done for the season according to head coach Bruce Arians, per Kent Somers of AZCentral.

This news is a bitter pill to swallow for Arizona fans who are still hopeful that their struggling and injury-plagued squad can turn its season around.

The Cardinals are 3-4 through the first eight weeks of the season and it’s not helping their optimism that they’re also dealing with the extended absence of starting quarterback Carson Palmer. Carson is now on the injured reserve with Johnson due to an arm injury.

That's yet another subplot in this entire story. What will, if anything, the Arizona Cardinals do to rectify its quarterback position? With the trade deadline coming and going, all that remains are gunslingers who are currently without a team. Generally speaking, with exceptions, there aren't many “good” options left when all a team has are guys off the street.

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Johnson played in just two games this season before being out a wrist injury. It was earlier reported that he could be targeting a return as soon as Thanksgiving Day, but this latest announcement from Arians, who also noted that the rung back is still in a cast, all but killed any hopes of Johnson ever getting back to the field this year.

For the meantime, the Cardinals will have to rely on the aging legs of Adrian Peterson to power their ground attack. In two games in Cardinals threads this season, the 32-year-old Peterson has 155 rushing yards with two touchdowns.