The injury outlook for the Bulls just keeps getting worse. James Johnson is the latest player to go down.

An MRI taken on Friday showed Johnson -- who was filling in injured Luol Deng at small forward -- has a partial tear of the plantar fascia tendon of his right foot. Johnson is out indefinitely and won't play tonight when the Bulls host the New Jersey Nets at the United Center. It's unclear how long Johnson will be sidelined.

"I have no idea," coach Vinny Del Negro said. "No one has any idea right now how his foot is gonna react. He's tried to loosen up [tonight] and he was just in too much pain.

"I don't know how he's gonna feel tomorrow, if he's gonna warm up, if it's gonna be more swollen. There's a possibility he could be out for a little bit just because he did partially tear it. He has swelling, some bleeding, all that.

"Nothing positive."

You could say that about the entire Bulls' injury situation in the second half. Center Joakim Noah and power forward Taj Gibson have battled plantar fasciitis, which is an inflammation of the plantar fascia tendon.

"We're having an epidemic with this problem right now with three guys," Del Negro.

With Deng also out, the Bulls are without their two small forwards. Del Negro opted to start a three-guard lineup against the Nets with Jannero Pargo moving into the starting lineup.