"Chicago Fire" season 5 was recently renewed by NBC network, but there are reports that at least one cast member will no longer be part of the series until its finale episode.

While speaking with TV Line, executive producer Matt Olmstead said that season 5 will be all about Jimmy Borrelli (Steven R. McQueen) and Chief Boden's (Eammon Walker) battle against each other.

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The exec also confirmed that one of the two characters will no longer return as a member of Firehouse 51.

In the finale episode for season 4, Jimmy blamed Boden for the death of his brother Danny. The latter sacrificed his life to save more people when a building collapsed and injured them. Boden was present during the accident so Jimmy cannot seem to stop himself from blaming him for Danny's demise.

As of late, it is still unclear whether or not Jimmy or Boden will only be leaving Firehouse 51. There are some rumors that McQueen or Walker themselves may also be leaving the hit NBC series altogether.

There are some rumors that McQueen may be leaving the show temporarily to return to The CW's "The Vampire Diaries." Some fans believe that the final season of the series will feature the return of as many of its original characters from seasons 1 to 6.

Unfortunately, none of these rumors have been confirmed yet.

In other news, "Chicago Fire" will also see Dawson and Casie will also have a difficult time agreeing on how to foster Louie.

According to Olmstead, the two characters will have a complicated relationship throughout the entire season.

The exec added that Stella (Miranda Rae Mayo) and Severide (Taylor Kinney) will take a breather in their relationship after the former had a huge brawl with her ex-husband.

"Chicago Fire" season 5 will premiere on NBC sometime this fall.

TagsChicago Fire, Chicago Fire Season 5, Chicago Fire Spoilers, Steven R. McQueen, Eammon Walker