Since Arsenal are the opposition on Sunday and have a plethora of attack - minded midfielders like Mesut Ozil and Santi Cazorla Dier 's role will be key .
Santi Cazorla will try and exploit any space in the lines between midfield and defender .
Since Arsenal are the opposition on Sunday and have a plethora of attack - minded midfielders like Mesut Ozil and Santi Cazorla , who will try and exploit any space in the lines between midfield and defender , Dier 's role will be key .