George Kittle returns to 49ers practice; Trent Williams’ Week 18 status unclear

SANTA CLARA — Left tackle Trent Williams’ status remains unclear for the 49ers’ regular-season finale against the Seattle Seahawks on Saturday night.Williams typically takes a rest day at the opening of the 49ers’ practice week, so it was expected he would not be on the field on Tuesday.Although it might appear unlikely he will play in Week 18, Williams has a chance to be able to be available for the 49ers’ all-important game at Levi’s Stadium, coach Kyle Shanahan said on Tuesday.Running back Christian McCaffrey, who also typically rests early in the week, was not scheduled to practice due to back tightness, Shanahan said.In a positive development, tight end George Kittle was scheduled to return to limited practice on Tuesday.Kittle did not suit up for the 49ers’ Week 17 game after he sustained an ankle injury six days earlier against the Indianapolis Colts. He has 52 catches for 599 yards and seven touchdowns this season. Kittle was chosen to his seventh career Pro Bowl last week.Jake Tonges started in place of Kittle, and he produced seven receptions for 60 yards and a touchdown. Tonges has 34 catches for 293 yards and five touchdowns on...