league Clásicos. He later missed the second leg of the Champions League quarter-finals against Liverpool, as he tested positive for COVID-19, although he was also injured. On 5 May, in the Champions League semi-final second leg against Chelsea, his side lost 2–0 and were eliminated from the competition; however, he then sustained an injury in his left hamstring which forced him to miss the rest of the season; this meant he had played his last game for Real Madrid. Ramos played just 21 matches for Los Blancos in 2020–21, making it his most injury-riddled season, after having played at least 33 matches in each of his previous 15 campaigns at the club. On 16 June, Real Madrid announced that Ramos would leave the club after 16 years. During his farewell event on the next day, Ramos, who had initially asked for a two-year offer, mentioned that he accepted a one-year contract renewal with a salary reduction; however, the offer had expired without his knowledge. Paris Saint-Germain 2021–22: Transfer to PSG On 8 July 2021, it was announced that Ramos had signed a two-year contract with Paris Saint-Germain. He chose to wear the number 4 jersey, with Thilo Kehrer switching to the number 24 shirt. Ramos remarked: "I am quite superstitious about it and I love the number 4 because I have worn that number since the start of my career and it has followed me throughout my career and my life, bringing with me much luck and many victories." During the medical examination required to complete the signing, the medical staff at PSG were reported to be impressed by his seriousness and physique, whilst the medical results were noted to be excellent and incredible. The staff compared Ramos' physique to that of a 25-year-old (he was 35 at the time). Due to a series of injury problems, Ramos made his first appearance in a matchday squad for PSG ahead of a Champions League group stage game against Manchester City on 24 November 2021. He made his debut four days later in a 3–1 league victory over Saint-Étienne. On 23 January 2022, Sergio scored his debut goal for the club, helping PSG to beat Reims 4–0 in a home league match. Ramos won the 2021–22 Ligue 1 in his first season at the club. 2022–23: Second season at PSG PSG started the 2022–23 season by winning the 2022 Trophée des Champions