Caterham F1 reserve driver Alexander Rossi is to make his debut in the Le Mans 24 Hours next month after signing up with the Greaves Motorsport team for the French classic.

The American, who is also competing for Caterham's GP2 team this season, will join up with Tom Kimber-Smith and Eric Lux at the wheel of the team's #41 Zytek Z11SN Nissan after regular driver Christian Zugel was forced withdraw from the race due to family and business commitments.

"We are sorry to lose Christian from our Le Mans lineup," team manager Jacob Greaves said. "He has been an integral part of the team over the past two seasons and brings many elements from his business world that have helped us.

"We are fortunate to have signed a driver of Alexander's caliber and we are confident that we can combine our strengths to challenge for the LM P2 class victory at 90th Anniversary Le Mans 24 Hours."

The sister car will see factory Nissan driver Michael Krumm racing alongside GT Academy winners Lucas Ordonez and Jann Mardenborough - the latter making his debut at La Sarthe in only his second year of racing.