Shortly before securing the title, Prost announced he would retire at the end of the season. At the time, he stated that under the terms of his Williams contract, while he could block Senna from joining Williams in 1993, he could not do so for 1994. However, in an interview for Asif Kapadia's 2010 documentary Senna, Prost revealed that the Senna clause did in fact extend to 1994, but Renault (Williams' engine supplier) pressured Frank Williams to ask Prost to waive the clause. As a compromise, the 38-year-old Prost agreed to retire after the 1993 season, provided that Williams paid him his agreed-upon salary for the 1994 season.Senna (film) (extended edition), at 1:47-1:50. This cleared the way for Senna to join Williams in 1994.
Shortly before securing the title, Prost announced he would retire at the end of the season. At the time, he stated that under the terms of his Williams contract, while he could block Senna from joining Williams in 1993, he could not do so for 1994. However, in an interview for Asif Kapadia's 2010 documentary Senna, Prost revealed that the Senna clause did in fact extend to 1994, but Renault (Williams' engine supplier) pressured Frank Williams to ask Prost to waive the clause. As a compromise, the 38-year-old Prost agreed to retire after the 1993 season, provided that Williams paid him his agreed-upon salary for the 1994 season.Senna (film) (extended edition) at 1:47-1:50. This cleared the way for Senna to join Williams in 1994.