The Cleveland Browns will be without their second-leading receiver for the remainder of the 2014 season.
"Miles sustained a kidney injury in Buffalo and remains in the hospital," coach Mike Pettine explained in a statement. "Our thoughts are with him and we wish him a speedy recovery. Miles is a guy who embodies what 'Play like a Brown' means and instills that in our receiving corps."
The 30-year-old former Cowboys star will finish his ninth NFL season with 568 yards and two touchdowns on 47 receptions. Austin was a reliable move-the-chains option for Brian Hoyer this season, but no longer boasts the run-after-catch power/speed combination that made him an elite playmaker in 2009 and 2010.
An afterthought free-agent signing last May, Austin will likely face a soft market again in 2015.