Although the Dolphins have already been linked to a possible offseason acquisition of Giants quarterback Eli Manning, Miami is “highly unlikely” to pursue Manning given the club’s investment in fellow signal-caller Ryan Tannehill, team sources tell Barry Jackson of the Miami Herald. There’s a lot to unpack here, but first is the subject of whether Manning will even be available during the offseason. The Giants fired both general manager Jerry Reese and head coach Ben McAdoo on Monday, meaning another group of decision-makers will be leading the club next year. Manning is under contract through 2019 with cap charges north of $22MM in each of the next two campaigns, and his deal also contains a full no-trade clause. If Manning does hit the free agent or trade market, the Dolphins would make — on the surface — make sense as a potential destination, especially given the presence of head coach Adam Gase.