New signing Robertson joined up with the rest of Jürgen Klopp's players following his transfer from Hull City last week.
Can, meanwhile, was back with the group having reported for club duty on Saturday following his exertions at the Confederations Cup.
View a full gallery from Melwood below.
The Reds fly out to Germany on Wednesday for their training camp, which will also include three friendlies. All four of Liverpool's remaining pre-season matches will be shown live on LFCTV and LFCTV GO.
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Photos by John and Andrew Powell
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