Newman-Janis algorithm’s application to regular black hole models

We examine the Newman-Janis algorithm's application to an exact regular static solution sustained by a minimally coupled scalar field with nonstandard kinetic term. Although coordinate complexification leads Kerr-like black hole, we are facing discrepancies in Einstein's equations fairly small domain, for which regularizing parameter is responsible. Outside this most intriguing region, geometry nothing but standard Kerr spacetime.