San Francisco 49ers general manager John Lynch said locking up star receiver Brandon Aiyuk with a long-term extension is one of the team's priorities this offseason. Aiyuk is set to play on the fifth-year option worth $14.1 million this season but reaching an extension this offseason could lower the immediate salary cap hit and lock in one of the team's best offensive players. “He served us very well as a franchise,” Lynch said Tuesday at the NFL’s annual scouting combine in Indianapolis.