John Lynch: Brandon Aiyuk is a guy we want to keep around a long time

49ers receiver Brandon Aiyuk enters the fifth-year option on his contract, scheduled to become a free agent in 2025. The 49ers want to keep him, but despite the $30.6 million increase in the salary cap, they might have a hard time signing him to a long-term deal.Teams can't keep everybody they want to keep.General Manager John Lynch, though, vows to make a run at getting Aiyuk signed to an extension."We have some challenges," Lynch said Tuesday. "We have a lot of good players, a lot of good players who we've rewarded. Brandon's one that we think incredibly highly of, one of my favorite guys around our building, the way he approaches the game. He's a competitor. He's a warrior. He plays with such physicality, also with grace, in the way some of the positions his body can get into."And then he's got a flair for making plays when [they] matter most, and he's served us very well as a franchise. And I think we've got a nice track record of extending the players that are important to us, and Brandon's the guy we want to keep around for a long time."The 49ers have managed to keep Nick Bosa and Deebo Samuel on long-term deals, but they traded DeForest Buckner in 2020 rather than try to...