... after undergoing "ligament repair surgery" on his left ankle, which he injured while sliding into second base during a game in Round Rock a couple of weeks ago. It's the same ankle that he injured while in college, which I would assume was a part of the decision to operate. This very likely puts the kibosh on any talk of trading Borbon (though there was some random report of the Nationals or some such contemplating trading for him despite the injury); if a team did end up feeling reasonably confident that he would make a full recovery and still want to make a deal with Borbon included, it would require permission from the commissioner's office.
And, of course, we could see Borbon up in the majors in a defensive/pinch-running role in September if he's healthy by then, though I very much doubt that either the Rangers or Borbon want to risk pushimg him back into action before he's fully healthy.
On a tangentially related note, the Rangers' medical staff has determined that Neil Ramirez has no structural damage in his right shoulder, but will be shut down for another 7-10 days. He had missed some time with arm fatigue recently, and while this is good news from a long-term standpoint, I have to wonder how this impacts matters if the Rangers had been looking at Ramirez as somebody they could move in a late-July trade.