Kirk (undisclosed) was limited Thursday in his return to practice and may not get back to full participation until next week, Josh Weinfuss of ESPN.com reports.
His return after only a few days, even in a limited capacity, suggests the undisclosed injury isn't serious. Kirk at least seems to be a bit healthier than fellow Cardinals receivers A.J. Green and Rondale Moore, with the former missing Thursday's practice and the latter leaving it early.