1. Offensive Tackle: The Chargers are certainly in the running for worst offensive line in the NFL, and the tackle position is their biggest problem. They made the move to sign King Dunlap, but he had some of the worst games I had ever seen out of a linemen last season. They not only need a starting caliper left tackle, but a right tackle as well. They need to address this as early in the draft as possible. Unfortunately they may need to consider trading up in order to grab one of the to tier tackle prospects.
2. Cornerback: Derek Cox was brought in to fill one of the open CB spots, but he is so injury prone and can't be relied on to hold down the position despite his talent. They also have no one to start across him even when he's healthy. They really need to bring in someone on the first two days of the draft. Don't even rule it out in round one if the other players they like are all taken.
3. Offensive Guard: I'm confident that the newly signed Rinehart will be a solid starter, but they don't have a starter for the other guard spot. This is another position that needs to be addressed though they will probably wait for a mid round selection. I've seen Warmack and Cooper mocked to them multiple times, but with so many other needs I don't see them taking a guard in round one.
4. Rush Linebacker: San Diego just spend a first round selection on a rush linebacker in last years' draft, but don't be surprised to see them spend another early pick on one this season. With Phillips gone, there is a lot of production to pick up. Ingram isn't good enough to handle the pass rushing duties all on his own.
5. Wide Receiver: Danario Alexander is a very talented wideout, but he is also extremely injury prone. Even when he's healthy, the receivers around him are very mediocre. The receiving class has a good amount of mid to late round sleepers in this draft, so it would be wise to pick one up. Phillip Rivers is in desperate need of weapons.
6. Inside Linebacker: With Spikes cut, there is now a hole on the inside of their line backing corps as well. they will probably try to fill this void with a mixture of a late round pick and a post-draft free agent signing.
7. Quarterback: Phillip Rivers is still the man at quarterback, but with his skills regressing and a new regime in town, his days may be numbered in San Diego. Don't be surprised to see them use a mid round pick on a developmental quarterback if one falls to them.
8. Safety: The Chargers have very mediocre starters and no depth behind them at the moment. This would be a much bigger need on most teams, but with the situation so bad in San Diego, they probably won't use any more than a late round pick on one.
9. Kicker: Nick Novak remains unsigned despite having a solid campaign for the Chargers last season. If they don't bring him back, a 6th or 7th round selection will probably be used on a permanent replacement.