The opener is still a month away, but I'm not sure if Clint will be fit to play the full 90 if he hasn't begun his rehab yet. This isn't a shot on Clint's fitness level, just a fact that it's going to take some time to get ready for the full 90. This will be especially true if he has to play as a midfielder rather than a striker. As a striker he can lurk around a bit more and not cover as much ground as he would as a midfielder.
A strong, Mathis of old would be detrimental to my team, but I sure would like to see the guy put his demons behind him and come out firing this season.