Clowney’s paid trainer says Clowney’s been working hard

There’s a ceiling on what South Carolina defensive end Jadeveon Clwoney can show us today at his pro day. We already know he’s a spectacular athlete, but he’s hoping to put on an even better show than he did at the Scouting Combine. While he ran a 4.53-second 40 (at 266 pounds), the 21 repetitions…