After hiring Kevin Towers as general manager and naming former interim GM Jerry DiPoto their senior vice president of scouting and player development, the Diamondbacks continued to rearrange their front office on Wednesday. Arizona fired scouting director Tom Allison, news first reported by Tracy Ringolsby of FOX Sports and Baseball America.

The Diamondbacks offered Allison another job within the organization, though it also has been rumored that he could wind up with the Mariners. Allison worked as a crosschecker under Seattle GM Jack Zduriencik when Zduriencik was the Brewers' scouting director.

Allison, 43, presided over Arizona's last four drafts. His first pick for the club, 2007 first-rounder Jarrod Parker, blossomed into one of the game's top pitching prospects before injuring his elbow and requiring Tommy John surgery that sidelined him for all of 2010.

The Diamondbacks farm system had slipped significantly since Baseball America ranked it the best in baseball entering the 2006 season, but Allison began to replenish it in the 2009 draft. Arizona owned eight of the first 95 selections and chose such promising players as third basemen Bobby Borchering (first round) and Matt Davidson (supplemental first), shortstop Chris Owings (supplemental first) and outfielder Marc Krauss (second).

The Diamondbacks failed to sign their 2010 first-rounder, No. 7 overall pick Barret Loux, after he failed a postdraft physical. Most teams considered the righthander a sandwich-round talent, and he was chosen in part because of his willingness to accept a below-slot $2 million bonus. Ringolsby reports that Allison wanted to choose lefthander Chris Sale, who ended the season in the majors as the White Sox's closer, but was overruled by former GM Josh Byrnes.