
Rossiter, who was initially signed as a test driver, has been promoted to the race seat for the 6 Hours of Monza following original signing Magnussen's surprise return to Formula 1 with the Haas team.
SUPER GT race winner Rossiter made his WEC debut in a Lotus LMP2 car in 2012 before moving to the top class with ByKolles, making sporadic appearances with the LMP1 outfit between 2016-19.