Apple is once again said to be vying for a space in New York's Grand Central Terminal to serve as a future retail store.

The Wall Street Journal reported today that the Metropolitan Transportation Authority is on the hunt to fill 15,230 square feet of retail space in the landmark transportation hub, and Apple has "expressed interest."

The space in question is currently taken by Charlie Palmer's Metrazur restaurant, and stretches two balconies located on the north and east sides of the terminal. According to the Journal, whoever goes in there next has to pay Palmer to vacate the lease, which runs through 2019.

In February, reports emerged that Apple was evaluating a space at Grand Central, and had already begun what was said to be a long approval process for a spot inside the landmark. That process involves pitching the MTA with a proposal, including how much the tenant wants to pay.

Apple's retail empire has grown substantially since 2001, the year the company opened up its first stores. Last week marked the 10th anniversary of that effort. Apple has opened more than 320 retail locations around the world.

Apple currently has four retail locations in New York City: Fifth Avenue, SoHo, Upper West Side, and West 14th Street. The 10,000-square-foot Fifth Avenue location is one of the busiest of all the stores, pulling in around $1 million in sales per day according to estimates in 2009. The larger space within the terminal has the potential to bring in similarly impressive numbers, with around 750,000 visitors coming through the station each day, ranging up to a million a day during the holidays.