The Miami Dolphins head into this weekend's International series game at Wembley with reports in America claiming the side's coaching staff could be replaced if they lose to the New York Jets.
The Dolphins have suffered consecutive defeats and sit bottom of the AFC East division.
Multiple sources inside the franchise – confirmed by NFL Media – indicate that there is widespread frustration among players directed at certain members of coaching staff.
During the offseason the Dolphins added a number of new players through the Draft and free agency, including Ndamukong Suh, Jordan Phillips, Kenny Stills, Devante Parker and Jordan Cameron. Franchise owner Stephen Ross indicated that we wanted his side to make the playoffs for the first time since 2008.
"There has to be improvement," Ross said in March 2015, after adding extending head coach Joe Philbin's contract by a year.
Miami have been practicing for tomorrow's fixture at Saracen's Allianz Park. The game will be the 12th NFL match held at Wembley in the series, but the first one to match divisional rivals.