This is a solid step up fight for Kulakhmet who looked like he could be a future world champion when he debuted earlier this year. McGowan is a domestic level operator in the UK who hasn’t shown a huge amount of power or got to British level yet.
I don’t think McGowan does anything better than Kulakhmet and the only advantage he has is pro experience but Kulakhmet had much more experience as an amateur.

I think Kulakhmet will win this fight comfortably by stoppage because of his superior technical skills and huge amateur background. McGowan isn’t really seen as a big prospect and has had mixed results and close fights around area level in the UK so I can’t see how he beats a world class amateur like Kulakhmet.