The North London club have lost four on the spin in the Premier League to crash out of Champions League contention.
While Richarlison knows they had a solid season, he believes there is much more to come.
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Look, we presented a much more dynamic and, let's say, more elegant and beautiful football than last season," the 26-year-old told ESPN Brasil.
"But we have evolved, we have evolved a lot and I believe that.
"As of this week, it has already been announced that the coach will make changes, so I believe that next season he will be putting together a much more competitive team."