Zenit St Petersburg assistant coach William de Oliveira is confident of Malcom's commitment.
The Brazilian has been linked with a summer move to Arsenal.
But De Oliveira insisted to Sport-Express: "These are all rumours.
"Malcolm is happy at Zenit. You see how he plays, how happy he is to be here. We have no information about his departure. I talked to Malcolm about it. He is satisfied with his role here and is happy to play for Zenit.
"Therefore, all these conversations are meaningless."