The pair were part of the first group that returned to training in West Derby as the champions of Europe started their preparations for the forthcoming campaign.
Both players have, of course, recovered from long-term injuries sustained in 2018 and were named as substitutes for the Champions League final win over Tottenham Hotspur last month.
Klopp has Brewster and Oxlade-Chamberlain firmly in his plans for the season ahead and they, along with the likes of Joe Gomez and Adam Lallana, represent immediate added quality to his squad according to the manager.
“If Ox can stay fit – new player for us,” the boss told Liverpoolfc.