Francisco can begin throwing in six weeks, and is expected to be ready for Opening Day.
Francisco went 1-3 with a 5.53 ERA in 48 relief appearances in 2012, having allowed 26 earned runs, 47 hits, 21 walks with 47 strikeouts in 42 1/3 innings in 2012 - he was shutdown after September 16 after being diagnosed with right elbow soreness.
Francisco's first season with the Mets was absolutely lost. He started off strong, but began to falter almost immediately. He reached a low point in Miami in early May when he blew two saves in three days. He seemed to bounce back after that, but then he injured his oblique, missed six weeks, and never got on track. He was intended to solidify the back end of the bullpen, but he did anything but in 2012. Between his contract (he's under control through 2013), injuries and poor performance, he doesn’t have much trade value. So hopefully he can get his elbow healthy and be a stabilizing force next season.
By the way, it's worth mentioning the Mets are now heading into camp with Francisco recovering from this surgery, Lucas Duda coming off wrist surgery, Johan Santana's questionable shoulder, and Dillon Gee is coming off season-ending surgery to repair an artery in his shoulder...