A number of Chicago Cubs executives have been linked to front office openings this year, but Theo Epstein isn't concerned.

Epstein believes Chicago's upper management team will survive its 2015 success intact as it plans improvements into 2016.

"I think we have a pretty tight-knit group, and this is a great time be a Chicago Cub, whether you're in uniform of in the front office," Epstein said. "I don't really worry about losing people. But if we do, I think we have a really deep organization, that there's another layer ready to step up. We have some depth in the front office.

"But I think that we're a great team in the front office, and I expect us to stay together for a while."