Barcelona's club doctor Ricard Pruna has urged new signing Neymar to put on weight.

The Brazilian, who agreed a switch to Camp Nou earlier this month, made headlines after scoring a stunning goal in his country's 2-0 win over Mexico in the Confederations Cup last night.

"My first impression is that Neymar needs to gain a pound or two," Pruna told the club's official website. "Our medical inspection was done quickly and his weight is just another data point.

"The first impression is that he weighs 64.5 kilos and he has a tendency to lose weight. Perhaps he needs to add a kilo or two, but I can't say exactly how many."

The 21-year-old is believed to have cost the Spanish giants £50m.