Instead, the 35-year-old will contest in the ancient but fierce Indy 500 in a bid to complete the Triple Crown (victories in the Monaco Grand Prix, Indy 500 and 24 Hours of Le Mans) which has only ever been achieved by one driver - Graham Hill.
"The headlines are good for motorsport," the Austrian said. "But from the team point of view, I cannot understand that McLaren does not use him in Monaco. He could definitely have scored points, although of course it's not a trophy at Indianapolis. I think it's about Alonso's ego."
Bahrain International Circuit - Winter testing