According to the AA website no - don't know if it's accurate but from what I've seen of AA business seats there is no place to attach a bassinet. Also please check the weight limits if bassinet is available on Iberia.

"Infants (under 2 years)

We accept infants as young as 2 days old. However, if you're traveling with an infant less than 7 days old, your physician will be required to fill out a passenger medical form before your flight. A special assistance coordinator will send the form directly to your physician. Infants must be accompanied by a person 16 years or older or by the infant's parent (any age) in the same cabin.

• Changing tables are available in the lavatories of all wide-body aircraft.
• Bassinets are available on a first come, first serve basis at the gate for travel only on 767-300, 777-200, 777-300 and 787 aircraft.*
• Bassinets are not available in First / Business cabins.

Seating options for infants:

1. Held by an adult (lap child): A parent or any person 16 years or older may hold the infant in their lap. The infant must be included in the reservation by calling American Airlines reservations. International taxes and percentage of adult fare may apply.
2. In a reserved seat: If your infant will travel in their own seat, you must buy a ticket. The infant must either travel in a safety seat approved by the Federal Aviation Administration (FAA) or be able to sit upright in their seat without assistance and have their seatbelt securely fastened during taxi, takeoff, landing and whenever the 'fasten seatbelt' sign is on.

*Infants using bassinets must be younger than 2 years old and weigh no more than 20lbs (9kg)"