When training camp opens next week, the Detroit Lions are expected to have running back Jahvid Best on the field without any limitations. After he suffered a season-ending concussion last year, he has spent the offseason working his way back. By all accounts, he has made great progress and should be cleared for contact, but right now it's not known if he has already been cleared or if he won't undergo the necessary testing until next week.
If the Lions consider Best to be an injured player, he will be scheduled to report to training camp on Monday, July 23. If that's not the case, he won't report until Thursday, July 26, which is when non-injured veterans are scheduled to return to Allen Park.
The first day of practice is set for Friday, July 27. As long as Best undergoes the necessary testing to see if he's ready for contact before then, he should be ready to hit the field on the first day of camp. Of course, that's assuming he is in fact cleared for contact. If that doesn't happen, there will be concerns larger than him simply being ready for the first day of camp.