Brandon Aiyuk might not be going anywhere anytime soon. The San Francisco 49ers wide receiver officially requested a trade this week but is facing an “uphill battle,” per ESPN’s Jeremy Fowler. Aiyuk, who’s emerged as one of the better receivers in the NFL, wants what he’s worth. According to Fowler, that’s around the $30 million a year mark set by other big named pass catchers this offseason. If he doesn’t get that, he wants out. But Aiyuk might be stuck between a rock and a hard place. “Well, from what I’m hearing, he’s gonna have an uphill battle to get traded because the 49ers are just not …