Tom Brady and Gisele Bundchen are going through a difficult period in their marriage.

The pair, who wed in 2009, are dealing with "marital issues," according to a source close to the couple.

The two are also "living separately," per another source.

Brady, 45, had retired in February, only to later reverse that decision. He took an 11-day leave of absence from training camp with the Tampa Bay Buccaneers in August to "deal with personal things."

In an interview with Elle magazine published this week, Bundchen, 42, said she had "concerns" about her husband returning to the field after initially retiring last winter.