Louisville running back Michael Bush will enter the NFL draft in April rather than return to the Cardinals next season. Bush, who announced his decision on Tuesday, broke his right leg in Louisville's season-opener against Kentucky on Sept. 3 and hasn't played since. A senior, Bush applied for a medical redshirt in case he decided to come back, but opted for the NFL instead. "I loved my time here at U of L, but I think it's time for me to move on," Bush told reporters.