"It's good to have him here, he looks in good shape", Klopp said as Firmino joined training in France.
While fans were expecting to Alisson to be given Karius' number one jersey, they could be made to wait until the official start of the season as the future of Liverpool's goalkeeping ranks are sorted.
Liverpool signed the 25-year-old Brazil worldwide from Roma last month, smashing the world record for a goalkeeper in a deal worth £67m.
Former Liverpool midfielder Adam has also questioned how well Shaqiri will react to being on the bench at Anfield, with Sadio Mane and Mohamed Salah likely to Jurgen Klopp's first choice picks in the wide positions.
Liverpool face West Ham United in their first league fixture on August 12.
The Brazilian striker is back with his club team-mates after a post-World Cup break.
Liverpool manager Jurgen Klopp has revealed how he hopes both players will be available for selection when the Reds kick off the new season next weekend.
"I think when you're playing against good teams in pre-season it prepares you better for the Premier League season", Fowler told Liverpoolfc.com in Dublin.
"This game we play for two reasons".
Since the loss of new Chelsea manager Maurizio Sarri, Napoli have acquired the services of elite manager Carlo Ancellotti who will be looking to enforce his fresh ideas in the upcoming friendlies.
"Yes, getting to the Champions League final eases some of those pressures that we were hearing around Christmas time a year ago about Jurgen Klopp and his spending and the media's love of him etc, etc".
"We should not waste time".