Ryanair will formally agree to sell its 29.8% Aer Lingus stake to International Airlines Group (IAG) on July 16, marking a major milestone for IAG’s Aer Lingus takeover plans .
Refer to the input text as context and select the correct relationship between 'Aer Lingus' and 'International Airlines Group' from the available options.
Options: parent organization, member of, owner of, creator