' Perhaps a bit earlier than expected, the Bills welcomed former starting right tackle Seantrel Henderson back to the practice field this week. Henderson, who started 26 games for the Bills over the last two seasons, had a serious battle with Crohn’s disease that left some to ponder if he’d be able to play again. Now Henderson is back on the field, and it immediately led to the question about his potential availability and playing level for the 2016 season.'