Following Memorial Day Weekend, the Buffalo Bills are back inside One Bills Drive for the start of voluntary Organized Team Activities (OTAs).

Tuesday marked the first day of the OTA period and head coach Sean McDermott spoke to the media ahead of practice. Here are five things we learned.

Attendance check

While the OTA phase of the offseason is not mandatory, McDermott reported strong attendance numbers for the team. All members of the active roster have reported for the week, except for RB James Cook.

"We're staying in touch like you'd expect a player and a coach to do. James will be here when he's ready to be here and we move forward," McDermott shared.

The Bills will lean on RBs Ty Johnson, second-year player Ray Davis and others in practice while Cook is absent.

Bosa to miss OTA

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