It's perhaps the most divisive debate in the history of football, Lionel Messi or Cristiano Ronaldo?
Both are Ballon d'Or winners, both are Champions League winners and both are considered the greatest of all time from their adoring public.
However, Manchester United midfielder Ander Herrera thinks he knows which one edges it out in their personal duel.
Herrera has already faced Ronaldo in the Champions League this season, while he is preparing to take on Messi in the quarter-finals of the competition next month.
And speaking ahead of the European showdown Herrera has pinned his colours to the mast of Team Messi by claiming he is the best player in the history of the game.
“The team (Barcelona) has the best player (Messi) in history," the Spaniard told El Periodico.
“For me, the most decisive I have ever seen in my life, and I have played and faced the best, but there is none like him.”
Speculation continues to mount over the future of Herrera, with the midfielder out of contract at Old Trafford at the end of the season, and the 29-year-old admits he is not surprised by the speculation.
"It is logical when you have three months of contract and there are stop selections," he added. "I already knew something was going to come out. I take it as normal, I focus on playing football in the month-and-a-half that remains.
"The rest is left to my agent, both the possible renewal with United and if you talk to another club for my departure."
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