It's not necessarily about scaring him off. But if Hagans, Quickley, and Baker are all back, Cal is going to play them. Baker might not see a ton of minutes, but they'll all be on the floor.
Even if we play three guards, four guys, plus Whitney, doesn't leave room for the role Hampton is looking for. Or even if you take Baker out of the equation, that's still not likely to happen because Hampton wants to play point if possible.
Normally I'd say that removes Duke, for similar reasons, but I think they'll have enough minutes/shots available that he could play alongside Jones and K can tell him he'll use him like Barrett, who facilitated the offense despite not being the PG.