Dont’e Thornton’s biggest highlight last season was the last one he made. The Tennessee Football transfer receiver slid in the end zone at Missouri in November, hauling in a 46-yard touchdown pass from Joe Milton III to give the Vols a 7-3 lead early in the second quarter. But Thornton suffered a season-ending lower-leg injury while sliding to make the touchdown catch. He finished his first season at Tennessee, after transferring from Oregon, with 13 catches for 224 yards and a touchdown. Thornton came on strong before the injury, though. In his final three games — including a little more than…