"We have been working through this for a while," Carroll said. "We had real good communication throughout and this is what he wants to do now. We actually talked about it for a couple weeks."
While a lack of playing time undoubtedly played a role in Green's decision to leave the program, Carroll stressed that family issues were the main factor.
"He's got family issues, stuff he wants to take care of so I support him totally," said Carroll. "I care a bunch about him doing what he needs to do.
"He has been a really good kid in the program, and I have been really close to him throughout the recruiting process and all that."
In an interview with Scout.com on Monday, Green shed some light on the factors behind his decision.
"There are some family problems I think I need to be around for. My mother and grandmother are both sick and my mom is going though some other stuff," Green told HawgsIllustrated.com. "They both live alone and I just don't like being so far away from them. I need to be back closer to home so I can take care of them.
"This is not a thing where I am trying to get away from USC," Green added. "I love it out here and I have learned a lot, but I just need to be closer to home for my family."
Green, a redshirt freshman tailback, had 32 carries for 168 yards and three touchdowns in limited action for USC this season.
USC safety Taylor Mays was named the Pac-10 Defensive Player of the Week after his impressive performance in USC's 17-3 win against Cal.
"Taylor had a terrific game," Carroll said. "He played really fundamentally sound football, which was really cool.
"It was really in the fashion of a big-time thumper free safety."
Cal was one of the first teams to try and attack the deep middle of the field against USC, and the 6-3, 230-pound safety responded with several bone-jarring hits Saturday night.
"He plays so sound back there that people don't throw post routes, and you rarely see seam routes," Carroll said of Mays. "He really owns the middle of the field, but these guys took some shots."
Mays had five tackles and broke up four passes against Cal.
News and Notes
- Coach Carroll said the USC offensive game plan was more conservative than usual against Cal, because the Golden Bears have been so successful at causing turnovers this season.
"We didn't force the issue," Carroll said when asked about the deep passing game. "It was part of the plan, knowing that it wasn't going to be available."
- Safety Kevin Ellison (knee) plans to try and do some running at practice on Tuesday. Coach Carroll said Ellison is way ahead of schedule on his rehab for his knee.
"He's of the mindset that he is going to make it back this week," Carroll said.
- Fullback D.J. Shoemate will get some work at tailback on the scout team this week. With the departure of Broderick Green the Trojans are a little thin on tailbacks on the scout team.
Taylor Mays had five tackles and broke up four passes against Cal.
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