Brown recorded a career-best 10 tackles and was responsible for two PBU in Texas' 41-38 win over USC. He has 23 career starts and notched 70 tackles, one INT and eight PBU in 2005.
The senior broke his arm during a goal-line collision with FS Michael Griffin.
"That was a freakish accident," Brown said. "It really got hung up under there, but he's fine. It's not a lingering thing at all."
Pittman earned second-team All-Big 12 honors and started nine games last season. He averaged 22.1 ypc, good for second in the nation among the top 100 receivers and first among those with 25 or more receptions.
The already-thin TE spot will miss sophomore Peter Ullman (right knee) this spring. Ullman saw action in all 12 games last season and recorded a three-yard TD reception against Kansas, the first of his collegiate career.
"Peter's knee is still not well so we'll have to look at playing some offensive linemen at tight end in short-yardage and goal-line (in jumbo packages)," Brown said "We may need a defensive end moving over and playing some tight end because we're still really thin at that position."