Is this possible???(Small doubt)

yes possible
becos complex formation of d block elements is much more favourable

It can be possible because K is more reactive than Zn, hence replaces the zinc and forms KCL. I am not sure about the strength of the coordinated bond because both K₄ ⁴⁺ and Zn₂ ⁴⁺ exhibit oxidation state enough for the bonding.

Thanks Arshad & Ankur