Last week, Rob Jackson signed a new one-year contract with the Redskins.

According to a report, he could be losing a chunk of the money that he was going to earn due to a suspension.

Howard Balzer of Sirius XM NFL Radio tweeted that Jackson will be suspended for the first four games of the 2013 season. According to other reports, the suspension is for testing positive for a banned substance.

Balzer said that Jackson will be able to participate in the team's offseason, training camp, and preseason games.

Grant Paulsen of 106.7 The Fan said on Twitter that Jackson has been informed of the suspension and an appeal is in process.

We will seek confirmation and further details.