Nemanja Matic has described the trolling of England and Manchester United centre-back Harry Maguire as a 'disaster'.
The Roma midfielder insisted that people 'who don't have their own lives' are targeting his former team-mate on social media.
Maguire, who has lost his place in defence under Erik ten Hag this season, was called up by Gareth Southgate and featured in England's 1-0 defeat by Italy on Friday.
A group of Three Lions fans booed the £80million Red Devils star and some have proceeded to abuse him on social media.
Matic has since hit out at the perpetrators, having previously spent three seasons at Old Trafford with the centre-half.
'What people are doing to him, it is a disaster,' Matic told The Times.
'Everything has to have limits and some of these people writing on social media, they don't have their own lives, so they just have to write bad things about someone else.'
Maguire featured during Manchester United's opening two defeats of the season against Brighton and Brentford, subsequently losing his place to defensive pairing Raphael Varane and Lisandro Martinez.
Ten Hag's side have since carved out four successive league victories without the 29-year-old in the starting line-up, triumphing against Liverpool, Southampton, Leicester and Arsenal to climb to fifth in the division.
Despite receiving a glut of online abuse from a selection of supporters, Maguire told talkSPORT: 'I am all good, ready to play, I feel fit and fresh.
'On my form, I don't know what has been said, I don't really read about it.
'I came off the back of three positive games with England in the summer, and a good pre-season. I felt really good.
'Obviously, the manager decided to leave me out for a game, and the team have been winning since.
'I am working hard on the training pitch to make sure I am ready for when my opportunity comes. That is all that I can do to try and help the team.
'I am not concentrating on anybody else and what people are saying.'