These boots were used by Kepa during his early games with Chelsea F.C. of the season 2018/2019. They are very recognizable on the the bottom picture, for the holes on both heels that were probably done due some blister’s issues. On 8 August 2018, Athletic Bilbao announced on their website that Arrizabalaga had paid his required release clause (€80 million / £71.6 million), making him the world’s most expensive goalkeeper only weeks after the record was set by Alisson’s transfer to Liverpool. Later that day, his move to Chelsea on a seven-year contract was confirmed, replacing Thibaut Courtois who departed for Real Madrid. He made his Premier League debut three days later in a 3–0 away win against Huddersfield Town, going on to keep six clean sheets in the team’s 12-match unbeaten run in the league, before a 3–1 defeat at the hands of Tottenham Hotspur. On 24 January 2019, in the second leg of the EFL Cup semi-final, Arrizabalaga saved a penalty from Tottenham’s Lucas Moura in a 4–2 shootout win at Stamford Bridge, helping his team go through to the final. On 24 February 2019, during the 2019 EFL Cup Final against Manchester City, with the match at 0–0 near the end of extra time, Maurizio Sarri called for Arrizabalaga to be substituted off for Willy Caballero for the upcoming penalty shootout; Sarri was concerned over his leg cramping a few minutes prior after making a diving save. However, Arrizabalaga refused to be substituted, gesticulating and remaining on the field. During the shootout, he saved one penalty as Chelsea lost 4–3. After the game, both Arrizabalaga and Sarri said that the situation was a misunderstanding, with Sarri incorrectly believing that Arrizabalaga was too injured with cramp to continue. Later on, Arrizabalaga met with Sarri and apologized to him and to the rest of the club. He was fined a week’s worth of pay as a result of his actions, with Sarri leaving the decision of any further discipline up to the club. Arrizabalaga was dropped from the starting lineup for Caballero in Chelsea’s next match, a Premier League game against Tottenham. He returned to the lineup for the following match. On 9 May 2019, Arrizabalaga saved two penalties in the shootout at the end of the second leg of the UEFA Europa League semi-final against Eintracht Frankfurt to take Chelsea to the final, which they won 4–1 over Arsenal.