"He asked me how things have been going and he got to know me and stuff like that," Casey said.
USC has been a school Casey has had high interest in for quite some time, but there are two other schools he has a lot of interest in.
"I really like Oregon and LSU," Casey said.
Casey briefly commented on what he likes about USC, Oregon and LSU.
"USC has a good football program and I can see they work hard on the schooling," Casey said.
"I like the environment out there in Oregon. I like the weather there—I like the rain, a lot. My brother was going to go there, but he had a little incident.
"I like the way they hit out there at LSU. They're a good football team."
Although he has an offer from USC, a school he has high interest in, Casey said he won't commit early and more than likely commit after taking all of his official visits.
Casey said he would attend a regional camp at Veterans Stadium in April and the Scout.com All-American Combine at Home Depot Center on April 29.
During his junior season, Casey had 104 tackles, 10 sacks and six forced fumbles.