Posada has not played since May 16, and when he was placed on the 15-day disabled list four days later, the Yankees guessed that he might miss three to four weeks.
But after taking batting practice at Yankee Stadium on Sunday, the catcher believes he might be ready very soon.
"I need more hitting, and we'll see," Posada said. "I think if I hit today and tomorrow, we'll see. Running is the thing. I've got to run the bases and all of that stuff. If it feels fine after that, we'll see."
Yankees manager Joe Girardi did not have a date in mind for Posada, who may need to play in rehab games before being activated. Posada can be activated on Tuesday at the earliest and said that he "would like to" play in the Orioles series that begins that night.
"I think a lot of it is going to take care of itself when we see him run, which is real close," Girardi said. "We're real close to seeing him run on the treadmill. Once he gets through that, we'll probably put him on the field to run. And once he gets through that, he's real close."
Posada had another MRI on Thursday in New York that confirmed he is healing well from the fracture, which he believes came from a foul tip off the bat of the Twins' Michael Cuddyer. Posada was happy to get the boot removed, the first step toward his return.
"It felt better without the boot than with the boot, to tell you the truth," Posada said. "Everything else was hurting because of the boot, hip and back and all that stuff. I tried my shoe and it felt good."
Girardi said that he would watch Posada to see if he runs with a limp, which would be a "huge concern" because of the chain reaction of injuries it could cause. Other than that, Girardi said he could be quick to offer a green light.
"The one thing we don't necessarily have to worry about is, in a polite way, speed is not one of the things we have to worry about," Girardi said. "As long as he's running OK, I don't see it being an issue. It's a little different to when you look at someone like [Curtis] Granderson, because he has so much field to cover out there."