The 23-year-old has signed a new five-year contract with the Champions League champions.
Bertrand made his Champions League debut in the final itself in May.
Reports suggest that Bertrand has earned a pay rise to £35,000-a-week.
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Liverpool have unveiled their new home kit for next season, sticking with the hugely popular retro styling of the current shirt.
The reputation of the Premier League means it is the most popular and one of the most watched leagues in the world.