UNRESTRICTED FREE AGENTS: TEs Antonio Gates and Jeff Cumberland; LBs Korey Toomer and Jerry Attaochu; RB Branden Oliver; OLs Matt Slauson, Chris Hairston, Kenny Wiggins, Michael Ola and Michael Schofield; S Tre Boston; QB Kellen Clemens; DT Tenny Palepoi.

RESTRICTED FREE AGENTS: S Adrian Phillips; CBs Trevor Williams and Greg Ducre; RBs Andre Williams and Russell Hansbrough; LBs Chris McCain and Nick Dzubnar; WRs Geremy Davis, Tyrell Williams and Isaiah Burse; TE Sean McGrath.

NEEDS: After 9-3 finish to season, Chargers believe they're few pieces away from contending. Offensive line wasn't outstanding, and top-notch right tackle would be welcome bookend for Russell Okung. Re-signing safety Tre Boston or finding his replacement is important. Clemens could be replaced by more viable backup to Philip Rivers. Linebacker depth is significant need. GM Tom Telesco said he wants to find established veteran kicker after last season's struggles likely cost Bolts playoff spot. And they must decide whether to give another season to Gates, who will be 38.

AVAILABLE SALARY CAP SPACE (approximately): $22 million.

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