Speaking at an Arsenal Supporters' Trust function, Dixon ripped into Bellerin, while also stressing assistant manager Steve Bould should have a greater influence in training.
He declared: "I said to Bouldie, 'you've got to sort Bellerin out he's doing my head in! Why is he making runs ahead of the forwards when there's no ball on?'
"Bouldie said 'I've told him'. So I said 'f****** tell him again!"
While he added of his former team-mate: "Bouldie does get to do some stuff in training, but not as much as he would like.
"Arsene (Wenger) went through a period of allowing him to do a little bit more.
"There was recognition in the press that Arsenal looked a bit more solid. Then it all went away."