Tom Brady's football career could be just days away from ending ... so says his ex-teammate Rob Ninkovich, who said this week he wouldn't be surprised if the QB retired after this season.
Ninkovich, who played eight years with Brady in New England, made the stunning claim on ESPN's "Get Up" ... saying if the Buccaneers lose this weekend, it could very well be the last game of Tom's historic career.
"It wouldn't surprise me if Tom just kind of walked away and do whatever he wants to do," the former Patriots linebacker said.