"He has to be economical, he has to pitch and change speeds," Cooper said. "Pitching is using command and changing speeds. John has a good changeup but we are going to have to tighten things up. Right now he is still climbing so it is about pitching, hitting locations, changing speeds. We have had guys that could do that at 95 mph. We had Buehrle that did it at 83 mph."
Danks is in Chicago for meetings and evaluation. The White Sox told him he needs to pitch at least once more in Arizona before he is sent out on a minor-league rehab.
Danks has had some moderate increases in velocity in recent outings. The White Sox want him throwing at 90 mph on a more consistent basis before sending him on a rehab assignment.
"John is going to have to pitch a little more like a Buehrle," Cooper said. "That would be the best example here because they all know Buehrle. You know Buehrle at one time was throwing at 88-89 (mph). The last three or four years with us he was at 82-83 but still but still found the way to do it. That is what I think (Danks) needs to do."
Cooper had Danks throw a side session on his return to Chicago and said he won't have to see Danks again before he is sent to a minor league affiliate for rehab.
"It doesn't matter what (speed) you throw, you still have to pitch," Cooper said. "When John was in his heyday throwing 95-96 (mph), he still wasn't good enough to say 'Here is my fastball, I am going to blow it by you.' He was pitching but I think he needs a little bit more pitch-ability in case his stuff doesn't come back to the way it was."