Tough.
Cal has lost a critical cog of the rebuilding plan. Sonny Dykes confirmed with Ryan Gorcey the departure of true freshman running back Lonny Powell from the program. The true freshman didn't see a snap at Cal this year, and you'd expect would move down the junior college route before transferring to another major program.
This is the second straight year Cal has lost one of their top offensive skill recruits. Erik Brown (one of the top ranked recruits from the 2014 recruiting class) departed the team before the season began, and now Powell is gone for 2015.