The Texans had a scare at their morning practice on Tuesday when All-Pro wide receiver Andre Johnson dislocated his left index finger during one-on-one drills.
Johnson was carted away from the field after talking with a team trainer on the sideline.
"We're getting it looked at, so hopefully he's back here this afternoon," Texans coach Gary Kubiak said after practice. "We'll have to wait and see."
Johnson was being covered by rookie cornerback Roc Carmichael on the play during which his injury occured.
"I wasn't at the drill, so I just got the information," Kubiak said. "Had a big lump in my throat like everybody else, but hopefully he'll be fine... It happened at the one-on-one drill and right away they took him to get it looked at, so that's where we're at right now.
"(He) should be back here shortly is what they just told me, so we'll know. Hopefully, it's just a dislocation and they're able to get back in place and he's able to get back to work."
Also on Tuesday, the Texans confirmed interest in free agent defensive end Ty Warren and fullback Lawrence Vickers. They hosted Warren on Monday and were hosting Vickers on Tuesday.
Vickers, 28, is from Houston, where he starred at Forest Brook High School not far from Reliant Stadium. He helped Peyton Hillis rush for 1,177 yards and 11 touchdowns last season in Cleveland. The Texans are in the market for a veteran fullback after the departure of Vonta Leach.
"I think there are some areas on our team that we might be able to improve depth-wise," general manager Rick Smith said. "(Vickers) is taking a physical now, and so we'll talk with him and visit with him later today."
Warren, 30, was a long-time starter for the Patriots before being cut last week. He missed the 2010 season with a hip injury, but Smith said the Texans feel comfortable with Warren's physical condition after examining him thoroughly on Monday.
"We're impressed with Ty," Kubiak said. "He's a heck of a player. I know him personally, obviously, from being from here, and I think he's trying to decide where he wants to go next. He's got some options, and we're hoping that maybe we might be one of those options."
Warren is from Bryan, Texas, about 100 miles northwest of Houston.