  We discuss a model with a SU$(2)_L$ doublet vector leptoquark (LQ), motivated
by the recent experimental results relating to the lepton universality of
$\overline{B} \to D^{(*)} \tau \overline{\nu}_\tau$. We find that scalar
operators predicted by the LQ are favored to explain the deviations, taking
into account the recent LHCb result. We investigate the extensive phenomenology
of the model and conclude that $B_s\to\tau \overline\tau$, $B\to
K\tau\overline\tau$, $B_u\to \tau\overline \nu_\tau$ and high-$p_T$ di-$\tau$
lepton signatures at the LHC will probe the interesting parameter region in the
near future.
