49ers head coach Kyle Shanahan expressed doubts about wide receiver Brandon Aiyuk's ability to play a full slate of snaps in the upcoming season opener against the Jets. Aiyuk has recently returned to practice after a summer holdout for a new contract, which raises concerns about his readiness for the game.

• Brandon Aiyuk's snap count is uncertain due to limited practice time.
• His holdout for a new contract may impact his performance.