Martinez replaces Fernando Santos, who left his job after Portugal suffered a shock defeat to Morocco in the World Cup.
Cristiano Ronaldo will be presented at the club’s Mrsool Park stadium in Riyadh at 7pm (16:00 GMT) on Tuesday.
Portugal captain has joined the Riyadh-based side on a deal until June 2025.
Ronaldo’s contract with Al Nassr has been estimated by media to be worth more than 200m euros ($214.5m).
The resolution will see International Court of Justice give opinion on Israel’s occupation of Palestinian territory.
The Turkish leader says the Portuguese footballer is ‘someone who stands for the Palestinian cause’.
Neo-Nazi activist Mario Machado accuses anti-racism campaigner Mamadou Ba of ‘injuring his honour’ on social media.
Morocco’s victories against major football powers unite people who for the last years have been facing economic crisis.
At 37, he’s not scoring as much as he used to. Can being on the bench bring out the best of what he can offer now?
‘I think now the world is with Morocco,’ coach Walid Regragui said, comparing the team’s run to the iconic boxing movie.
‘The dream was beautiful as long as it lasted,’ Cristiano Ronaldo wrote on Instagram in a possible hint at retirement.
The Moroccan goalkeeper has already created history, helping his nation reach the World Cup semifinals.
Morocco’s stunning upset of Portugal will likely be the 37-year-old captain’s final World Cup match.
Morocco break new ground in becoming the first African and Arab country to ever reach the World Cup semi-finals.
