  The dispersion relation of the single hole in the $CuO_2$ plane is calculated
in the self-consistent Born approximation for the three-band Hamiltonian. We
find that direct oxygen-oxygen hopping removes the strong anisotropy of the
hole spectrum around the band minima. Our results compare well with recent
photoemission measurements of the single-hole dispersion relation in $Sr_2
CuO_2 Cl_2$.
