Knowledge is power and the greatest asset you can acquire in order to compete for a fantasy football championship. Here’s your 2021 preview of the San Francisco 49ers, the seventh of 32 team profiles leading to draft season: — 2021 Fantasy MVP: George Kittle, TE A healthy Kittle (ADP: 26) is almost certain to give you over a thousand yards and at least 80 receptions. What’s been missing? Touchdowns. He only has 14 in 53 career games. My Spidey-Sense says he surpasses double-digits for the first time — it’s the only way his ADP is justified. — 2021 Fantasy Rookie to watch: Trey Sermon, RB It wi…