The veteran newswoman will return to her old stomping grounds for one week in January, opposite her former co-host Matt Lauer, ET confirms. Couric, who left “Today” full-time in 2006 to lead “CBS Evening News,” will be subbing in for Savannah Guthrie, who is on maternity leave since giving birth to her second child on Dec. 9. This isn’t the first time the 59-year-old Couric has returned to “Today.”