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American Airlines Merger to Aid Citigroup Credit Card Risk

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CCCIT is a part of Citigroup's North American Consumer Bank, the firm's largest banking business globally, meaning an improving risk profile to the trust could be a benefit to the bank's overall creditworthiness.

Such a scenario would come at an opportune time for Citigroup. In March, the bank will face Federal Reserve administered stress tests , which will decide whether it can improve on a 1-cent a quarter dividend, or buy back shares.

Last March, Citigroup failed its 2012 stress test after then-chief executive Vikram Pandit's plan to return capital to investors was rejected by the Fed.

While the successful exit of American Airlines from bankruptcy and the potential repayment of all creditors could be a positive for the airline, risks such as an antitust review remain in its proposed merger with US Airways.

-- Written by Antoine Gara in New York