some details from the Herald
http://www.miamiherald.com/sports/spt-columns-blogs/armando-salguero/article205165309.html
Tannehill’s cap number goes from $19.8 million this year to approximately $8.6 million. The Dolphins are saving $11.2 million in cap space with the move.
http://www.miamiherald.com/sports/spt-columns-blogs/armando-salguero/article205165309.html