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We present a study of fits to exclusive $B^{0} \to D^{*-} \ell^{+}\nu_{\ell}$ measurements for the determination of the Cabbibo-Kobayashi-Maskawamatrix element magnitude $|V_{cb}|$, based on the most recent Belle untaggedmeasurement. Results are obtained with the Caprini-Lellouch-Neubert (CLN) andBoyd-Grinstein-Lebed (BGL) form factor parametrizations, with and without theinclusion of preliminary Lattice QCD measurements of form factors at non-zerohadronic recoil from the JLQCD collaboration. The CLN and BGL fits are alsostudied in different scenarios with reduced theoretical assumptions, and athigher order expansions, respectively. To avoid bias from high systematic errorcorrelations we employ a novel technique in the field of $B$-physicsphenomenology with a toy MC using a Cholesky decomposition of the covariancematrix. Using additional input from Lattice QCD calculations of form factors atnon-zero recoil, in collaboration with JLQCD, allows for well-defined fitresults with reduced model dependence in CLN and BGL. The results obtained areconsistent between different configurations, ultimately providing a method fora more model-independent exclusive measurement of $|V_{cb}|$. Using preliminaryinputs, $\mathcal{F}(1)\eta_{\rm EW}|V_{cb}|$ is found to be approximately$(35.02 \pm 0.29 \pm 0.88) \times 10^{-3}$ in BGL(2,2,2) and $(34.96 \pm 0.32\pm 0.96) \times 10^{-3}$ in CLNnoHQS.

Revisiting fits to $B^{0} \to D^{*-} \ell^{+} \nu_{\ell}$ to measure $|V_{cb}|$ with novel methods and preliminary LQCD data at non-zero recoil