  We analyze the semileptonic $ B_{s} \rightarrow D_{s2}^{*}(2573)\ell\bar{\nu
}_{\ell}$ transition, where $\ell=\tau,~\mu$ or $e$, within the standard model.
We apply the QCD sum rule approach to calculate the transition form factors
entering the low energy Hamiltonian defining this channel. The fit functions of
the form factors are used to estimate the total decay widths and branching
fractions in all lepton channels. The orders of branching ratios indicate that
this transition is accessible at LHCb in near future.
