Dixon, a freshman, was suspended for last Thursday’s game against California. Coach
Dixon was not made available to reporters after Tuesday's practice.
Sarkisian said Dixon's situation was "ongoing" and "in the university's hands."
"They have given him the green light to practice, which is a positive, so we'll see where it goes," he said
Asked whether Dixon would be eligible to play Saturday, Sarkisian said, "I don't know yet."
Dixon has six receptions, three for touchdowns.
If he is held out again, senior Randall Telfer would be the Trojans' only scholarship tight end.