With under two weeks remaining before the Wizards begin the regular season, center/power forward Nene remains sidelined due to plantar fasciitis in his left foot and uncertain of when exactly he’ll return.

The Brazilian big man visited a foot specialist in Baltimore this week, where he received electric stimulation therapy. But he’ll remain in Washington, along with injured John Wall (knee) and Kevin Seraphin (calf), while the Wizards visit the Milwaukee Bucks on Saturday.

“I was a little behind than I thought,” Nene said. “It’s still enflamed. I just want to take care of it the right way. But all the exercises, I’ve been doing fine. I’ve been listening. I’ve been obedient.”

He was also hesitant when asked if he’d be ready for the Wizards season opener at Cleveland on Nov. 30.

“I’m not going to say,” he said. “That’s the reason I don’t say. I don’t know. I want to, but sometimes it does not go the way you want. I just want to make sure I’m healthy to help my team because if I sit down again, that’s not good.”

Wizards coach Randy Wittman said it’s up to Nene when he returns but that he wouldn’t put him out on the floor without practices underneath his belt.

“He’s amping up, doing more and more what he can do in terms of with the training staff,” Wittman said. “He went to Baltimore like I said, and they liked what they saw and the progress he’s been making. And that’s all I can really go on in terms of that.”

The Wizards have enjoyed the return of Trevor Booker and Chris Singleton, who returned to action in Washington’s 104-101 loss at Toronto on Wednesday. Booker (hamstring) is still expected to be limited against the Bucks while Singleton (right shoulder) was wearing an ice pack after practice on Friday.

“It felt okay, a little stiff,” said Singleton, who continues to play power forward due to Washignton’s thin ranks up front. “Just have to get back into the swing of things. Still banged up, but I can get through it.”

Singleton and Booker were also involved as the Wizards took care of some business on Friday afternoon. The team exercised all of its options on its second- and third-year former first-round draft picks. Fourth years were picked up for Booker, John Wall, Jordan Crawford and Kevin Seraphin, and third years were picked up for Singleton and Jan Vesely. One by one, each was called into a meeting with the front office after practice. There was little emotion as they returned, but Vesely later said via Twitter, “Good news!!!”