Jurgen Klopp still regards Luis Diaz as "fresh blood" at Liverpool and believes the winger will benefit from having a full pre-season under his belt.
Diaz was an instant success when making a surprise £50million move from Porto shortly before the January transfer deadline, scoring six goals and providing five assists in 26 appearances while starting the finals of the League Cup, FA Cup and Champions League.
The 25-year-old has taken a little while to rediscover his form this summer but was much livelier in the Reds' 1-0 defeat at Red Bull Salzburg on Wednesday.