Brewers owner Mark Attanasio has indicated that he's nearing extensions with general manager Doug Melvin and and manager Ron Roenicke, according to Tom Haudricourt of the Milwaukee Journal-Sentinel (on Twitter).
Melvin has been general manager of the Brewers since 2002. As MLBTR's Transaction Tracker shows, he's made notable trades for C.C. Sabathia, Zack Greinke, and Shaun Marcum while also drafting the likes of Prince Fielder, Ryan Braun, and J.J. Hardy. Recently, Melvin has signed Aramis Ramirez and Randy Wolf to big-money free agent contracts.
Roenicke has been the Crew's manager since the beginning of the 2011 season. He led the Brewers to an NL Central Division title and an impressive 96-66 record in his first season at the helm. He now sports a 108-81 mark in his managerial career.