The original offer contained $712.8 million in junk bonds.
But the offers are for a limited time and contain an array of restrictions.
But the two longtime allies could not agree on exactly what the offer should contain.
The company's initial offer contained a provision that would have allowed it to cut wages of workers in operations that were losing money.
More importantly, marketers must make sure that their offer contains real value for the customer and follow strict opt-in policies.
However, many industry analysts have expressed skepticism that the unions' offer would contain enough value to entice current shareholders.
The offer, reported by the official ADN news agency, contained no date for such negotiations, nor did it specify which groups should take part.
The offer contains an agreement that guarantees that Eastern's fleet will remain near its current levels.
He said the offer contained "some new wrinkles" for his client, who has received a multimillion-dollar offer from a Japanese team.
Series bundles and special offers have also contained the separate artwork releases of the included titles.