SURPRISE, Ariz. -- The Texas Rangers announced Friday that team president Nolan Ryan is adding the title of CEO, replacing Chuck Greenberg, who is leaving the organization.

Ryan will oversee all baseball and business operations for the organization, reporting directly to the board of directors.

In a Rangers news release, Greenberg, who was managing general partner and CEO, said he, Ryan and co-chairmen of the board Ray Davis and Bob Simpson have "somewhat different styles" and he said he was disappointed that they "did not work through our differences."

Sources said Greenberg's departure was the result of a variety of factors that built up during the offseason.

One included Greenberg's selling a suite at Rangers Ballpark in Arlington that general manager Jon Daniels used for meetings and to entertain family members and various opposing front-office people. Ryan and Daniels didn't want the suite sold.

Greenberg also got more involved in the Michael Young trade talks than the baseball operations staff wanted, sources confirmed.

"I really think that we shouldn't bring up any differences that we had, so I'm really not going to go into that," Ryan said during a Friday afternoon news conference with Davis and Simpson at Rangers Ballpark in Arlington. "I don't really think there was an event that created the separation that we had. I think it's just a combination of philosophy. Like a marriage, you think things are going to work, but we all know in business that until you get in there on a day-to-day basis, you don't get a feel for how it's going to work."

Ryan said he did not envision his role changing significantly after serving as the team president the previous three seasons. Several Rangers officials, including Ryan and Daniels, said Greenberg's exit would not affect baseball operations.