
Alonso, like Button a former Formula One world champion, has been allowed to miss the race to compete instead for McLaren at the Indianapolis 500, with both showpiece races taking place on May 28.
"Owing to Fernando Alonso's commitments with McLaren-Honda-Andretti over the weekend of the Indianapolis 500, which iconic race will take place on the same date (May 28th) as the Monaco Grand Prix, Jenson will take over Fernando's McLaren-Honda MCL32 for one race only: the equally iconic Monaco Grand Prix," said a team statement.