On Tuesday, the Vikings welcomed several key players back. Allen and quarterback Sage Rosenfels (ankle) returned to the practice field and are set to play against the Texans.
"I didn't know how my ankle was going to respond out here today, but everything felt great," Rosenfels said. "It was literally as if we had practiced yesterday and I had played in the game. I felt like there was really no rust today."
Rosenfels said he hasn't been informed how much or when he will play against his former team, the Texans. Vikings coach Brad Childress said only that starter Brett Favre will play the first half.