Madison, Wisc. — Penn State coach James Franklin had little in the way of an update about injured starting quarterback Drew Allar following the team’s 28-13 win over Wisconsin. But, he did decide what went into the decision not to bring him out for the second half. “I’m not going to get into a whole lot of medical stuff right now, especially when I don’t have a whole lot of information,” Franklin said. “I wouldn’t necessarily describe it [as being precautionary]. It was, is he going to be mobile enough to give us a chance to run the offense the way we [want]? “It really came down to Drew once …