Kittle’s return couldn’t come at a better time 49ers head coach Kyle Shanahan joined KNBR Friday morning as he does before every game. It sounds like George Kittle will make his season debut; as Shanahan said, “I’d be surprised if he doesn’t play.” Denver has struggled to stop tight ends this year as they’ve allowed the third-most yardage per game and ranked 22nd in DVOA. It doesn’t help that they’re down star safety Justin Simmons. They haven’t sniffed a tight end close to the caliber of Kittle. Sunday night should be Kittle’s coming-out party, especially if Deebo Samuel has a…