The French defender is out of Euro 2012 and believes he was the victim of a deliberate foul.
"I think he did it on purpose," Sagna told French newspaper L'Equipe. "He stepped on my leg right where the plate was. I think the plate pressured (the bone). It's a neat break, just above the plate.
"When I tried to control the ball, I felt a crack, just like the first time at Tottenham."