The San Francisco 49ers are returning the majority of key figures from last season's Super Bowl runner-up. Coach Kyle Shanahan has more depth than starting spots up for grabs in training camp. He was also able to return e sentially every member of a coaching staff that probably includes at least three future head coaches.The NFC West franchise will lean heavily on some familiar faces this fall. CBS Sports explores five roles that could be mired in competition leading up to the regular season.1. Right guardVeteran was released and has since announced Bob Gibson Jersey his retirement following the team's Super Bowl run. Shanahan now finds himself in the unenviable situation of replacing him. The next starting right guard is likely the winner of a competition between and . The former is a traveled veteran with eight years of experience. The latter is on his second NFL team with just seven starts to his name.San Francisco is already adapting to another change along their offensive line. was acquired this offseason to replace at left tackle. 2. CornerbackFans and analysts alike project Sherman to regre s with each pa sing year but he continues to play at a high level. The questions arise when exploring the options opposite him. and are the leaders in the clubhouse. Witherspoon, a third round pick in 2017, has recorded Keith Hernandez Jersey three interceptions in as many seasons. It would be unwise to rule out , who has battled injuries but po se ses immense talent as a former first round selection. is the obvious starter at nickelback. He is a physical player willing to involve himself in each Trevor Rosenthal Jersey play.3. Wide receiverGeneral manager John Lynch has taken some bites of the apple -- , , -- but finding long-term contributors has been a struggle. A year ago, a big step forward was taken with the selection of . The South Carolina product was used in a variety of roles to accentuate his strength; movement skills with the ball in space. One of the team's two first round picks was spent on Arizona State wide receiver . Aiyuk is a shifty option in San Francisco's downfield pa sing attack. A healthy and should also command some targets in that offense. There will be no shortage of speed for the NFC West franchise in 2020.4. Tight end has established himself as one of the two premier tight ends in the NFL. The depth behind Kittle was rather shallow, however. San Francisco had two tight ends on the field for 30% of their snaps last season. In an ideal world, both would be viable receiving threats. was drafted in the sixth round but his skill set is more Matt Carpenter Jersey of the blocking variety. and return to the roster. The most appealing option is , formerly of the . The signed him Aug. 3. He has an extensive history of concu sions that has cost him 31 games since entering the league in 2013. When on the field, he has averaged 5.1 receptions per game. 5. Defensive tackle was cast away to the in exchange for the No. 13 overall selection in the 2020 NFL Draft. San Francisco used that choice to select South Carolina defensive tackle . Next to Kinlaw is , who has shown marginal improvement but is not where a former first round selection should be at this stage Miles Mikolas Jersey of his career. Thomas' leash is long with dominant, established pa s rushers on either side of him. However, and D.J. Jones are more than qualified of applying some pre sure at the spot. Blair is currently on the PUP list but was a coveted free agent when healthy.