and signed a four-year contract with Al-Hilal. On 21 June, Díaz signed Ali Al Bulaihi for free from Al-Fateh. On 3 July, Al-Hilal signed Mohamed Kanno and Hasan Kadish from Ettifaq. On 10 August, Díaz won the first match of the season 2–1 against league debutant Al-Fayha. On 15 August, Ramón Díaz won his second match of the season which was against Al-Taawoun 4–3. On 21 August, Díaz made Al-Hilal draw against Al Ain 0–0 in the 2017 AFC Champions League quarter finals. On 11 September, Díaz made Al-Hilal qualify to the semi final of the AFC Champions League after beating Al-Ain 3–0. After that, he signed Gelmin Rivas to become his sixth registered foreigner player in the 2017–18 season. On 16 September, Ramón Díaz won the third match of season against Ohod 1–0. On 21 September, Al-Hilal drew against Al-Ittihad 1-1. On 26 October, Diaz made Al-Hilal won the Riyadh Derby against Al-Nassr. On 18 November, Diaz and his team drew in the first leg of the final of the AFC Champions League against Urawa 1–1 in Riyadh. On 25 November, they lost the second 1-0 making them runners-up in the tournament. On 1 December, Diaz led his team to win against title challengers Al-Ahli 2–0. On 17 December, Diaz and his team lost their first match in the league against Al-Fayha 2–1. After that, Diaz won against Ohod 4–1. On 20 January, Al-Hilal were kicked out of the Kings Cup by Al-Qadisyah in the round of 16. On 13 February, Al-Hilal drew their first match in their new stadium the King Saud University Stadium against Al-Ain 0–0 in the Champions League. On 20 February, Al-Hilal lost 1–0 against Esteghlal in Oman. On 21 February, Al-Hilal sacked Ramon Diaz due to unsatisfactory performances. Botafogo On 8 November 2020, Díaz was named manager of Série A side Botafogo. He subsequently returned to his home country to make an emergency surgery to remove a tumor, and his absence was prolonged due to his clinical condition. On 27 November 2020, Botafogo announced the departure of Díaz and his staff from the club. He left the club without managing a single match for them, as the three matches played by them during the period (all losses) were managed by his assistant and son Emiliano Díaz. Al Nasr In February 2021, he agreed to a contract with Al Nasr to last until the summer