The NFL officially opened the door to training camp for its 32 teams Saturday morning.

The next steps are determining whether the union representing the players is on board as well as local health officials at each training camp site with regard to safety in the midst of the coronavirus pandemic.

General managers and head coaches received a memo from NFL executive vice president of operations Troy Vincent which announced rookies would report to camp on Tuesday, quarterbacks and injured players Thursday and all other players on July 28.

That doesn’t include the Kansas City Chiefs and Houston Texans, who will begin earlier since they open the season on Sept. 10 in the Thursday night regular-season opener.

A 49ers spokesman said the club was was checking in with its government affairs team for clarification. According to NBC Sports Bay Area, the 49ers have been in regular contact with Santa Clara County health officials for months and the general feeling is training camp would proceed if the NFL is open for business.

The Raiders have already opened their new practice facility in Henderson, Nevada to coaches and administration and support staff not exceeding 150 people, as per NFL guidelines.

At the conclusion of a conference call with reporters Friday evening, union executive director DeMaurice Smith stopped short of saying there was an agreement with the NFL.

“The doctors last night on the call said, with a couple of reservations, that they felt that it was safe to open training camp, and they provided their medical reasons, Smith said. “Some of the things we agreed with, some of the things we may not agree to. But overall, they gave their medical opinion that it was safe to open training camp. And that’s where we are.”

If camps do open, they will be radically different in terms of structure to minimize the risk of contracting COVID-19.

All NFL training camps will be closed to the public this season.

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