Jared Goff in his last 22 games (once Anthony Lynn was fired/relived of play-calling duties):
66% completion, 5,688 passing yards, 40 TDs vs. 9 INTs.
I think you just keep him and roll with him. Jameson Williams should have his coming out party next year. You have a rock solid offensive line and strong running game. You have 3 young emerging studs on defense in Hutch, Houston, and Joseph.
Use that F/A money on defense, defense, defense. Pray you can get Jalen Carter in the 1st and Mazi Smith in the 2nd. This team should be REALLY good over the next 3-5 years if they play their cards right this off-season.