BEREA, Ohio -- Joe Banner helped transform the Philadelphia Eagles into an NFL power. He's got another huge challenge -- making the Cleveland Browns a consistent winner.

Banner was introduced Wednesday as CEO of the Browns, joining new owner Jimmy Haslam III in trying to turn around a franchise stuck in an almost continuous cycle of losing.

With Banner joining the Browns, team president Mike Holmgren will leave after this season and retire. Holmgren was hired by owner Randy Lerner in 2009 to turn around the Browns, who returned to the league as an expansion team 13 years ago but have undergone numerous coaching changes and roster overhauls.

General manager Tom Heckert's future in Cleveland is uncertain. League sources, however, told ESPN NFL Insider Adam Schefter that Heckert is unlikely to return to Cleveland next season.

Banner worked with Heckert -- and several other former Eagles employees in Cleveland's front office -- in Philadelphia. Banner said Heckert, coach Pat Shurmur and everyone in Cleveland's personnel department will be evaluated after the season.

"There isn't a single one I don't like personally, have a lot of respect for and I've seen them do their jobs extremely well in an environment where I worked right with them," Banner said. "I come in with a very positive attitude and impression about all those people."

Banner said he has not "necessarily" resigned himself to making changes.

"There will be a thorough evaluation of everything that we do, but whether there will be changes or not I think time will answer that for us," he said.

Banner spent 19 years with the Eagles, spending 12 seasons as president before leaving the club last season. While he was with Philadelphia, the Eagles went to the playoffs 11 times and won six NFC East titles. The 59-year-old will officially start his job on Oct. 25, when Haslam's $1 billion purchase of the Browns from Randy Lerner closes.

Banner is expected to oversee Cleveland's day-to-day football operations, but it's not yet known how involved he will be in personnel decisions.