Arizona Cardinals fans got a bit of a jolt when training camp began at Northern Arizona University on Tuesday. Running back Beanie Wells (knee) joined tight end Jeff King (quadriceps) on the active physically unable to perform (PUP) list after failing the team physical. Like King, Wells won't practice until that designation is lifted, but coach Ken Whisenhunt told reporters the move was expected with Wells.

“We were going to be conservative in our approach with him anyway,” Whisenhunt said.

Wells can come off the list at any point during camp but had to be placed on active PUP before camp began, per league rules. He still counts against the training camp roster.

Wells declined to put a timeline on his return when he spoke to reporters on Wednesday.

“It just takes time,” said Wells, who had surgery in the offseason which he continues to characterize as arthroscopic despite his extended recovery time. “I don’t want to go out there and put wear and tear on it in camp.

“I don’t think anybody wants to see a 75 percent Beanie Wells. Everybody wants to see a 100 percent Beanie Wells. There’s no question I’ll be ready for the season opener.”

For more news and analysis from Cardinals blogger Craig Morgan, follow @CBSSportsNFLARI on Twitter.