The Roosters enjoyed a season with Tedesco playing every game, so a back-up plan wasn't needed last year.
The club hopes that run of availability continues, but Trent Robinson must have alternatives if Sydney's star fullback is sidelined.
Depth is a strength for the Roosters across most spots, yet fullback remains a particular area to monitor.
Coaches and selectors are weighing up three players who could cover the number one jersey if required.
One contender is Cody Ramsey, whose journey back to NRL fitness has been remarkable.
The former Dragon has not featured in the NRL for three years after being struck down by ulcerative colitis and spending seven months in hospital.
Training performances have given teammates confidence about his readiness.
Despite the long layoff, Tedesco has expressed faith in Ramsey's capabilities.
"Cody has been outstanding. We've swapped in and out of training plenty of times, and he's done an awesome job," Tedesco told the Sydney Morning Herald.
"To hear his story, and what he's been through, and to now come back and play footy, it's pretty special. He's definitely stood out at training.
Beyond Ramsey, the club's internal options and possible emergency shifts from halves or the wing will be part of Robinson's considerations.
The coaching staff will monitor pre-season and the early rounds to judge who can best replicate Tedesco's ball-running and defensive reliability.
If forced into a change, the Roosters will prioritise a player who can handle the attack orchestration and aerial demands of fullback.
The coming weeks should clarify whether Ramsey or another squad member will be the front-runner for cover duties.