DAVIE (CBSMiami) –  Miami Dolphins owner Stephen Ross has left the team’s complex without any announcement regarding the makeup of the organization for 2014.

Ross spent more than six hours at the Dolphins’ headquarters on Thursday.

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Miami Dolphins owner Stephen Ross’ helicopter arrived at the team’s facility Thursday morning as rumors and speculation swirled about what, if any, changes would be made to the organization.

Since the Dolphins’ late season collapse cost the team a playoff berth, speculation has been that both general manager Jeff Ireland and offensive coordinator Mike Sherman could be on their way out from the team.

Ireland has drawn fan scorn for much of the last few years and the constant roster turnover has led many to question his ability to put a winning team together. The Dolphins have a record of 46-50 since Ireland took over as general manager in 2008.

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Sherman’s offense was the target of a lot of fan scorn this year. The Dolphins scored more than 27 points just one time during the season, a Week 14 win over the Pittsburgh Steelers. And the scoring was not the only offensive number that suffered in 2013.

The former Texas A&M coach was also heavily criticized for abandoning the running game throughout the season. Miami ran for 14 yards against the Buffalo Bills in Week 16 and just a week later, the Patriots ran for 267 against the same defense.

According to profootballreference.com, Miami’s offense ranked 26th in the league in points and 27th in total yards from scrimmage. The Fins were 29th in first downs gained, 28th in net yards per passing attempt, 29th in rushing attempts, 26th in rushing yards, and 27th in rushing touchdowns.

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Ross spent much of the morning and afternoon at the facility and as of 4:30 p.m., nothing had been released by the team about a staffing move and nothing had leaked to the media as well.