If McClain does not report to camp by 5 p.m. ET he could be subject to a fine or worse, as the Cowboys have not released him.
McClain was suspended for the first 10 games of the season for violating the NFL’s substance abuse policy, and did not participate in OTAs. Dallas signed veteran linebacker Justin Durant to replace McClain after his suspension was announced.
Cowboys executive vice president Stephen Jones called McClain’s status “a work in progress.”
McClain signed a one-year, $5 million contract extension with the Cowboys this off-season, and received a $750,000 signing bonus. If the Cowboys cut him, his bonus would count toward the salary cap but his release would free up an additional $2.6 million in cap space.
McClain, 27, was also suspended for the first four games of the 2015 season for a substance abuse violation.
In five NFL seasons, he has logged 288 total tackles and 9.5 sacks.