Marcus Rashford
Rashford, Diogo Dalot, Fred and Luke Shaw were all in the final year of their deals but had an option to extend their contracts by 12 months.
The Spaniard said he no longer uses his Twitter account after flagging the incidents to the club.
Phil Neville, Manchester United legend, believes that Marcus Rashford is as good as French talents Kylian Mbappe and Ousmane Dembele.
Marcus Rashford, Kylian Mbappé and Ousmane Dembélé are among the 25 contenders to win the 2017 Golden Boy Award, run by Italian newspaper Tuttosport.
Manchester United started the Premier League by defeating West Ham United with four goals with no reply at Old Trafford Stadium on Sunday.
