Wow. Nobody saw this coming. Especially a day after Another slow news day for the 49ers, right? Right. San Francisco waived 2021 third-round pick Trey Sermon a day after roster cuts. Sermon is subject to waivers, but someone will claim him. This is the 49ers’ corresponding move to claiming former Browns offensive lineman Blake Hance. Remember, last year, the Niners traded two picks to move up and select Sermon. General manager John Lynch said in the preseason finale, “throughout training camp, Sermon has been one of our best players.” As if we needed proof that, more often than not, the…