Manchester United coach Phil Neville has tipped Rosenborg fullback Cristian Gamboa as one to watch.
Gamboa has impressed Neville during Costa Rica's World Cup campaign.
"@Moe_ManUtd4lyfe: Since u were a fullback, which fullback in the world cup has impressed u the most?
Gamboa Costa Rica
— Philip Neville (@fizzer18) June 27, 2014
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