Bryant has agreed to a one-year, $3.25 million contract with the Raiders, Adam Schefter of ESPN reports.
Bryant caught four of six targets for 64 yards in Saturday's 45-14 wild-card playoff loss to Houston.
Bryant was spotted warming up as Cleveland's starting tight end ahead of Sunday's game against the Bengals, Zac Jackson of The Athletic reports.
Bryant caught his lone target for a two-yard touchdown in Sunday's 29-12 loss to Denver.
Bryant (hip) is active for Sunday's game against the Bears.
Bryant (hip) is expected to play in Sunday's game against the Colts, Adam Schefter of ESPN reports.
Bryant (hip) is listed as questionable for Sunday's game at Indianapolis, Scott Petrak of the Elyria Chronicle-Telegram reports.
Bryant (hip) was a limited participant at practice Thursday, Mary Kay Cabot of The Cleveland Plain Dealer reports.
Bryant (hip) will not participate at practice Wednesday, Scott Petrak of the Elyria Chronicle-Telegram reports.
Bryant caught his lone target for two yards and had one rushing attempt for two yards in Sunday's 28-3 loss to Baltimore.