Everyman

[pldcav]

5 down: Hang about first base and second for transfers (7)
C _ A _ G _ S
Presumably CHANGES but I can't parse it to my satisfaction. Or is it CHARGES?

[Lie-in King]

Changes - 'c(irca)' (about, first) + 'hang e (base; maths) s(econd)'

[sedge47]

HANG with C (about) preceding it - followed by E (base in logarithms) and S(econd).

[pldcav]

Thanks very much Lie-in King. I don't know if I've seen Base = e used in a crossword before. Nice to have something new!