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The best footballer in the world Lionel Messi, who is on fire, missed Monday's team training.
The Argentine fell ill after a relatively easy 4-1 victory against Malaga on Sunday.
The forward will likely miss Wednesday's King's Cup match against Seville's Real Betis, where Barcelona's team will only have to solve formalities - the first match was won 5-0.
This season in the Spanish championship, Messi has already scored 18 goals.
