Following the exit of Rui Patricio, as well as head coach Jorge Jesus, the foursome of Dost, Carvalho, Martins and Fernandes made a decision to go public on Monday, and filed notice with the Portuguese Securities Market Commission that they meant to terminate their contracts, invoking "just cause" after being attacked in their workplace.
Fernandes, along with William Carvalho and Gelson Martins, are claimed to have requested the termination of their deals at Sporting, putting a number of clubs on red alert.
Portuguese side Sporting are still feeling the affects of ultras breaking into their training ground last month and attacking a player as three more players have asked to have their contracts terminated.
It's the latest in a series of weird developments at the Estadio Jose Alvalade.
Macedonia and Greece reach agreement in name dispute
Athens contends that the name Macedonia represents a territorial claim over Greece's northern province, also named Macedonia . The announcement came after telephone talks with Greek counterpart, Alexis Tsipras, on Tuesday.
This has prompted a mass exodus at Estadio Jose Alvalade, with manager Jorge Jesus having already left the club and goalkeeper Rui Patricio and forward Daniel Podence looking to follow suit.
Everton could look to capitalise on the situation at Sporting Lisbon by signing winger Carlos Mane, according to reports. Only last summer, Record (h/t Uche Amako of the Daily Express) reported the Reds were willing to spend £43.7 million on his signature.
Sporting Lisbon President Bruno de Carvalho has offered to stand down if key players withdraw their threats to leave the club in protest at his behaviour which some say amounted to psychological violence. The ideal scenario for Liverpool and other admirers would be for the Portuguese Securities Market Commission to rule in their favour, thus freeing them to leave for free.
Martins is preparing for Portugal's World Cup campaign.