Poll has accused Alli of simulation during the Euro 2016 last-16 tie between England and Iceland at the Allianz Riviera in Nice on Monday evening.
“The Tottenham man burst into the penalty area in the 30th minute but then threw himself to the ground with a most outrageous dive which had to be cautioned rather than ignored,” Poll wrote about Alli in The Daily Mail.
“We often complain about ‘foreign players’ going down theatrically but this was a dreadful example of simulation which will continue as long as referees fail to punish this clear act of cheating.”
Alli is one of the most talented and promising young English players, but he had a game to forget against Iceland.
England suffered one of the most embarrassing defeats in history, as they went down 2-1 to Iceland in the last-16 tie.
Manchester United forward Wayne Rooney put the Three Lions in the lead from the penalty spot as early as the fourth minute.
Ragnar Sigurdsson equalised for Iceland just two minutes later, and Kolbeinn Sigthorsson put them ahead on 18 minutes.
Alli took four shots, had a pass accuracy of 87%, created two chances, attempted two dribbles, and made one block.
In four matches for England at the 2016 European Championship in France, the 20-year-old Tottenham midfielder created six chances, had a pass accuracy of 82% and a shot accuracy of 13%, and won five headers, eight dribbles and two tackles.