The Washington Redskins will be without kick/punt returner Brandon Banks for a second straight preseason game because the second-year pro is receiving a series of Platelet Rich Plasma (PRP) treatments to his surgically-repaired left knee.

Banks, who had the knee operated on last November after tearing a meniscus in the Oct. 31 game at Detroit, has been sidelined for much of this preseason’s practices and played against Pittsburgh on Aug. 12, but has been sidelined for all but one practice since. Banks last week tried running two pass routes, but his knee began swelling almost immediately after.

Banks went to Alabama last Wednesday to have his knee examined by Dr. James Andrews, the team’s orthopedic consultant, and PRP treatments were prescribed. The method is intended to accelerate tissue regeneration and involves drawing blood from the area and placing it in a machine that spins the blood to separate platelets from the other blood components. From there, the concentrated platelets are then re-injected into the area where they release regenerating growth factors.

“He won’t be able to go next week, but hopefully against [Tampa Bay], we’ll try it again then,” Shanahan said of Banks, who in the preseason opener against Pittsburgh returned a kickoff 58 yards.

People close to the situation say, however, that it’s likely that Banks will miss the preseason finale as well.

Banks wore a sleeve on his left leg, and when asked how he was doing during pre-practice locker room availability, he refused to comment.

With Banks sidelined last Friday against Indianapolis, Washington turned to fellow second-year receiver Terrence Austin, who fielded four punts and averaged 11.3 yards a return, including a long of 29 yards.

Austin also had three catches for 23 yards in the game.

“I thought he did a good job,” Shanahan said of Austin. “I think Terrence is a big-time player. What I mean by that is, he can play special teams, he can play offense, he can play inside positions. I like the way he handles himself. He always has his head in the game”