Palace chairman Steve Parish described the problem as “probably the most reckless I’ve ever seen” and that Roberts “endangered a fellow skilled and perhaps his life”.
On Monday Millwall stated reporting of the incident “contributed to an unwarranted character assassination” of Roberts.
Millwall stated he contacted Mateta after the match “with an apology which was accepted instantly”.
Roberts served the primary recreation of his ban as Millwall misplaced 2-0 to Bristol Metropolis within the Championship on Tuesday.
Millwall supporters confirmed their help for the goalkeeper by holding a minute’s applause for Roberts within the ninth minute, whereas singing “there’s just one Liam Roberts”. There have been additionally some boos.
Michael Oliver, who refereed the sport, is not going to be concerned in a Premier League match this weekend.
He despatched Roberts off for the problem after intervention from the video assistant referee (VAR).