The Kings are looking to sign Springbok hooker Bongi Mbonambi in a deal reportedly worth R10-million over the course of two and a half seasons.
Former Blitzboks assistant Vuyo Zangqa has returned to the Eastern Cape after being appointed as the Kings assistant coach for the 2019-20 season.
The Kings will take on World Cup-bound side Georgia, in the first of their 2019-20 PRO14 warm-up matches in Tbilisi next month.
The Kings maintain that only one of the candidates for their vacant head coach position had the required qualifications for the job.
The Cheetahs and Kings will start the 2019-20 Pro14 season at their home grounds when they host the Glasgow Warriors and Cardiff Blues, respectively.
Worcester Warriors coach Rory Duncan has been given permission by the Premiership side to talk to other clubs amid rumours of a return to South Africa.
Former Springbok boss Peter de Villiers has apparently been shortlisted by the Kings along with three other candidates for the vacant head coach role.
Eastern Province Rugby Union deputy president Bantwini Matika will remain in his position at the union despite his controversial comments about Nick Mallett.
Former Springbok flyhalf Braam van Straaten has left the Sharks to join the Kings’ backroom staff as a defence and kicking coach.
Experienced flyhalf Demetri Catrakilis has rejoined the Kings ahead of the upcoming Pro14 season.