Pedro Caixinha has been confirmed as the new head coach of Rangers after he signed a three-year contract.
The 46-year-old was granted permission to join Rangers by Qatari club Al-Gharafa on Friday.
The Portuguese coach is not expected to take charge of the Ibrox side until after Sunday's meeting with Celtic.
Mark Warburton left the Rangers hot seat in February, with the club's Under-20s coach Graeme Murty in interim charge for the past five games.
Caixinha previously managed Uniao Leiria and Nacional in his home country, and led Mexican side Santos Laguna to the 2014 Copa MX Apertura trophy, the 2015 Liga MX Clausura title and the 2015 Campeon de Campeones trophy, as well as the 2013 CONCACAF Champions League final.
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