Source: Yetur-Gross Matos aggravates hamstring injury during 49ers practice

SANTA CLARA — Just as 49ers defensive lineman Yetur Gross-Matos appeared close to returning, he aggravated an injury that could sideline him for a while.Gross-Matos, 27, a six-year NFL veteran, re-injured his hamstring in practice on Thursday and could be a candidate for injured reserve, a source told NBC Sports Bay Area.Gross-Matos originally sustained the hamstring injury on Oct. 2 in the 49ers’ victory over the Los Angeles Rams. He missed the past three games but was tracking toward being available to play Sunday against the New York Giants.The 49ers have a dearth of defensive linemen. Nick Bosa’s season-ending injury, while Bryce Huff is expected to miss one more game with a hamstring injury.San Francisco lost defensive end Trevis Gipson off waivers to the Carolina Panthers on the same day Keion White was acquired in a trade from the New England Patriots.Sam Okuayinonu (ankle) and Jordan Elliott (ankle) are listed as questionable for Sunday’s game against the Giants.The 49ers could elevate veteran defensive lineman Clelin Ferrell from the practice squad to serve as one of the 48 players to suit up Sunday. The 49ers signed Ferrell...