  Spacetime metrics describing `non-singular' black holes are commonly studied
in the literature as effective modification to the Schwarzschild solution that
mimic quantum gravity effects removing the central singularity. Here we point
out that to be physically plausible, such metrics should also incorporate the
1-loop quantum corrections to the Newton potential and a non-trivial time delay
between an observer at infinity and an observer in the regular center. We
present a modification of the well-known Hayward metric that features these two
properties. We discuss bounds on the maximal time delay imposed by conditions
on the curvature, and the consequences for the weak energy condition, in
general violated by the large transversal pressures introduced by the time
delay.
