  We consider the possibility of having a large branching ratio for the decay
$b\to s g$ coming from an enhanced Wilson coefficient of the chromomagnetic
dipole operator. We show that values of $BR(b\to s g)$ up to $\sim 10\%$ or
more are compatible with the constraints coming from the CLEO experimental
results on $BR(B\to X_s\gamma)$ and $BR(B\to X_s\phi)$. Such large values can
reconcile the predictions of both the semileptonic branching ratio and the
charm counting with the present experimental results. We also discuss a
supersymmetric model with gluino-mediated flavour violations, which can account
for such large values of $BR(b\to s g)$.
