GREEN BAY, WI - DECEMBER 13: Head coach Jason Garrett of the Dallas Cowboys stands on the sidelines in the first half of the game against the Green Bay Packers at Lambeau Field on December 13, 2015 in Green Bay, Wisconsin. (Photo by Ronald Martinez/Getty Images)

NFL has reportedly acknowledged it botched a crucial call during Cowboys-Packers

The Cowboys lost 34-31 in crunch time.

The most controversial play of the matchup between the Dallas Cowboys and Green Bay Packers was an unsportsmanlike conduct penalty on receiver Brice Butler.

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Related: Official clarifies why this drive-killing penalty was called against the Cowboys 

According to Fox Sports NFL analyst Michael Lombardi, there should not have been a penalty called, and the NFL admitted this to teams in recent days.

However, NFL Senior VP of Officiating Dean Blandino and NFL Vice President of Football Communications Michael Signora said Lombardi's claims were inaccurate.

Lombardi tweeted back his response and continued to back his claim.

Butler was livid at the call after the game, and it likely cost the Cowboys points in a tightly contested game. The Cowboys were forced to punt after a 22-yard gain was negated what would have put Dallas in the red zone.

The Cowboys lost 34-31 in crunch time.

(h/t 247Sports)