San Francisco 49ers Draft Preview: Cody Fleener, Stephen Hill on San Fran's Radar with the 30th pick?

2011 was the 49ers best season in a decade. San Francisco made its long awaited return to the postseason after winning the NFC West with a 13-3 record.

The 49ers lost a heartbreaker in overtime in the NFC Championship Game. In the three months since that game, San Francisco has done a good job of filling any holes they had last season. They signed Randy Moss to a one-year deal and Giants wide receiver Mario Manningham to a two-year contract.

San Francisco's improved offense will compliment one of the best defenses in the league. The 49ers were second in the NFL, allowing just 14.3 points per game. They were first in rushing yards allowed at 1,236.

Despite their offseason moves, the 49ers are far from a perfect team. Here are San Francisco's biggest needs heading into the draft, as well as a few players they will be targeting.

Receiver

The additions of Randy Moss and Mario Manningham will certainly improve one of the worst receiving corps in the league, but they won't solve all of the 49er's problems. Moss is 35 years old, and hasn't had a productive season since 2009. Manningham was the Giants third option and has never caught 1,000 yards in a season.

Without a solid number one at the position, you can bet the 49ers will look to upgrade through the draft. Stanford tight end Coby Fleener may be atop general manager Trent Baalke's list. Wide receivers Stephen Hill and Reuben Randle could also be on the team's radar for the 30th pick overall.

If the 49ers wait until the second round to take a receiver, Chris Givens from Wake Forest could be their guy at number 61.

Defensive Line

The 49ers had one of the best defensive lines in the entire league last year. Justin Smith is one of the best in the league at his position, and Ray McDonald was terrific a season ago.

Still, the 49ers could use some more depth on the line. Smith is very good, but is entering his 12th season.

It's not out of the question that the 49ers could take a defensive lineman with their first pick. Kendall Reyes from Connecticut or Jerel Worthy from Michigan St. would be a solid pick for San Francisco in the first round. If the 49ers decide to wait for round two, look for them to grab Alameda Ta'amu out of Washington.

Offensive Line

After the moves they've made thus far in the offseason, the offensive line has probably become the team's weakest position. While they were very good on rushing attempts, San Francisco's line had its troubles against the pass rush in 2011. The 49ers allowed 44 sacks last year, putting them tied for seventh-worst in the NFL.

The loss of right guard Aaron Snyder to Arizona will force the 49ers to take an offensive lineman at some point in the draft. Either Kevin Zeitler of Wisconsin or Cordy Glenn of Penn St. would be the most likely candidates to be taken by the 49ers in the first round. Brandon Brooks from Miami could be their selection if they decide to take a guard in round two.