MIAMI GARDENS, Fla. — The Miami Dolphins are moving on from Tua Tagovailoa and starting over at quarterback.Tagovailoa — the team’s primary starter for the last 5 1/2 seasons — will be released, the Dolphins said Monday, a move that comes less than two years after he signed a $212 million extension with the club.It will result in a $99 million dead cap hit, the largest in NFL history, yet the Dolphins evidently saw that as the best path forward.“I recently informed Tua and his representation that we are going to move in a new direction at the quarterback position and will be releasing him after the start of the new league year,” Dolphins general manager Jon-Eric Sullivan said in remarks released through the team.The league year starts Wednesday afternoon. If the move is designated as a post-June 1 release, the $99 million is split over two years, with about two-thirds on this year’s cap and the remaining third in 2027.“As I shared with Tua, I have great respect for the person and player he is,” Sullivan said. “On behalf of the Miami Dolphins, I expressed our gratitude for his many contributions, both on the field and in the community, during his six seasons in Miami.”Tagovailoa went 44-32 as Miami’s starter, dealt with concussions on multiple occasions and at times was a lightning rod for critics. Over the last five seasons — not counting his first year when he wasn’t the full-time starter yet — Tagovailoa completed 68.6% of his passes, second only to Joe Burrow over that span, w …