There are a few options on a deep roster The 49ers are expected to turn the keys over at quarterback and begin the Trey Lance era. If Lance lives up to his lofty draft status, scoring points shouldn’t be an issue for an offense that’s expected to trot out at least two different starters in 2022. Aaron Banks has big shoes to fill at left guard, replacing Mr. Durable, Laken Tomlinson. Alex Mack’s retirement opens the door for Jake Brendel, Daniel Brunskill, or potentially an undrafted rookie. Jaylon Moore and Brunskill will also battle for the right guard spot. Right…