#1 Andrew Robertson
The Scottish star should be one of Liverpool's most successful transfers in recent seasons. Bought for just €9 million from Hull City in 2017, Robertson has now turned into arguably the best left back in the Premier League. This season he has racked up 11 league assists and has claimed his place in the PFA Team of the Year deservedly.
An energetic and pacey defender who can create key passes for his teammates with ease, Robertson is expected to cause a lot of trouble at Barcelona's defense. His defensive work also should not be underestimated as he has been an integral part for the least-conceded team in the Premier League.
He will have arguably the most difficult and most important task of his life in this game as he must stop Lionel Messi by any means necessary. Assist king Jordi Alba will also support the Argentinian wizard from the left flank. Hence, Robertson would need to be extra cautious and Liverpool's fate at the Camp Nou might depend heavily on his display.