​Barcelona talisman, Lionel Messi has opened up on their Champions League disappointments over the past two seasons, claiming that the Catalan giants must "start from scratch" this time around.

Barcelona have endured disappointing exits over the past two editions of the competition, despite taking three goals lead in both their games against AS Roma and ​Liverpool, which led many to call for the resignation of manager, Ernesto Valverde.

Having topped the group which included teams like ​Inter Milan and ​Borussia Dortmund this season, Messi wants his team-mates to forget the disappointments of the past and focus on the present.

"To be honest, it's always there. But we have to start from scratch. It's a new year, a new competition. Obviously we have to learn from mistakes, but to think of the present and the future," Messi said as quoted by ​Goal.

"We must forget what happened last year and the year before, it would be a mistake to think of that."

The 32-year-old who recently won a record sixth Ballon d'Or award, has continued his brilliant form this season, netting 14 goals in 15 games so far and will be needed to continue this impressive form if the Catalan's are to challenge for trophies both domestically and in Europe.