No idea. From what we have been told, he has "broken bones" in his foot. There's a lot of bones in there, and I can't imagine him playing with a broken metatarsal, especially #1, so that simply leaves us guessing. Could be the next bone down the line into the toe, and the neighboring toe bone as well, but, again, I can't imagine him out on the field at speed on broken weight bearing bones. All I can really think of for how that would feel is that old vid of Mr. T: "Pain."
I don't have a lick of specialized knowledge, just curiosity and the willingness to look things up.