With Alain Prost , Ayrton Senna and Nigel Mansell all desperately trying to sign for Williams , Patrese 's position looked to be under threat .
Patrese signed for the Benetton team before the end of the year .
With Alain Prost , Ayrton Senna and Nigel Mansell all desperately trying to sign for Williams , Patrese 's position looked to be under threat and he signed for the Benetton team before the end of the year .