[TrumpCard]

It definitely depends how you count.  Here is USB's depth chart from the Fiesta Bowl:
http://www.ourlads.com/ncaa-football-dep...dame/91487

This shows nine starters who have remaining eligibility.  As you noted, Folston started in 2014, so I would probably call him a returning starter, even though he might not be as good as Prosise.  Also, Redfield was the starter all last year until being suspended for the Fiesta Bowl, and he's returning.  The more questionable one is Jerry Tillery, a true frosh who started 3 games including the Stanford game this year. 

So I would say 9-12 returning starters, and I'd probably go with 11 as the most reasonable interpretation.  By my count, that's the same number that Stanford loses (again that number is subject to interpretation), though I suppose USB does lose more guys who project as first or second round NFL draft picks.

[TrumpCard]

It definitely depends how you count.  Here is USB's depth chart from the Fiesta Bowl:
http://www.ourlads.com/ncaa-football-dep...dame/91487

This shows nine starters who have remaining eligibility.  As you noted, Folston started in 2014, so I would probably call him a returning starter, even though he might not be as good as Prosise.  Also, Redfield was the starter all last year until being suspended for the Fiesta Bowl, and he's returning.  The more questionable one is Jerry Tillery, a true frosh who started 3 games including the Stanford game this year. 

So I would say 9-12 returning starters, and I'd probably go with 11 as the most reasonable interpretation.  By my count, that's the same number that Stanford loses (again that number is subject to interpretation), though I suppose USB does lose more guys who project as first or second round NFL draft picks.