ST. LOUIS (AP) - The St. Louis Rams have set a Friday news conference to discuss coaching staff changes, likely including a new defensive coordinator.

Published reports have said coach Jeff Fisher has chosen Tim Walton, the Detroit Lions' secondary coach the last four seasons, as coordinator. The Rams went without a coordinator last season after Gregg Williams was suspended for his role in the Saints' bounty scandal.

Earlier in the offseason, the Rams came close to hiring Rob Ryan to the position.

Fisher's news conference is set for 1 p.m. CST.