Lots of names!
Cal is losing a bunch of wide receivers to graduation. Bryce Treggs, Darius Powe, Maurice Harris, Stephen Anderson, Trevor Davis and Kenny Lawler are all off and gone, leaving a big wide hole in terms of overall receivers to catch. Cal is replacing over 60 to 70 percent of their production in the passing offense (not to mention that whole quarterback thing).
Chad Hansen: Hansen came on late in the season as a real target for Jared Goff, grabbing 14 of his 19 catches in the final four games for over 200 yards and a touchdown.