(B)
reassign such employee to the first position within the agency—
(i)
which becomes vacant after such determination,
(ii)
which is not included within such program,
(iii)
for which such employee is qualified, and
(iv)
which is acceptable to the employee.
A determination by an agency under this paragraph shall be made not later than 10 days after the day on which a written request for such determination is received by the agency.