New York Jets new head coach Rex Ryan
New York Jets new head coach Rex Ryan (C) poses for pictures with with team owner Woody Johnson (R) and general manager Mike Tannenbaum (L) at a press conference at their training facility in Florham Park, New Jersey, January 21, 2009. Reuters

The New York Jets and Miami Dolphins both missed the National Football League (NFL) playoffs this season but their early offseason took an interesting turn on Wednesday with reports that the Jets former general manager Mike Tannenbaum has flipped sides and is now the head of football operations for the rival Dolphins.

NFL insiders Mike Garafolo and Alex Marvez of Fox Sports were one of the first reporters to update the said development on Twitter.

Sources tell @alexmarvez and me Dolphins are expected to hand over football operations to Mike Tannenbaum in the near future. Story coming.

— Mike Garafolo (@MikeGarafolo) January 6, 2015

Furthering our @NFLonFOX scoop, @ProFootballTalk reports Mike Tannenbaum's title is Executive Director of Football Operations @MikeGarafolo — Alex Marvez (@alexmarvez) January 6, 2015

During Tannenbaum’s stint with the New York Jets, the team went 57-55 and 4-3 in three appearances in the NFL postseason. He left the Jets in 2012 when the team went 6-10 in the regular season. Currently, Tannenbaum is an agent representing several NFL and National Basketball Association (NBA) coaches. He will serve this capacity until Feb. 1 before moving to his role as the head of operations with the Miami Dolphins.

Both the Jets and Dolphins belong to the American Football Conference - East division in the NFL and both consider each other rivals because of their history. The Jets have the slight edge in their head-to-head match-up 51-46-1 all-time against the Dolphins. Both had won Super Bowl titles, the Dolphins in 1972 and 1973 and the Jets in 1968 although both teams have struggled in recent years.

To contact the author of this article, email j.gloria@IBTimes.com.au