The Spanish airline Air Europa remains optimistic about the future despite the failure of a planned takeover by the IAG group, according to a communiqué issued on Friday. Despite market instability, Air Europa said its business model remained “solid and viable.” On Thursday evening, the parent company of British Airways and Iberia withdrew its takeover offer, citing insurmountable hurdles due to concerns raised by the European Commission. IAG shares rose 5% in early trading on Friday after it confirmed thetermination, PA Media reported. IAG now intends to pay €50 million ($54.17 million) in co…