He has now joined Jurgen Klopp's men at their training base in France following a post-World Cup break.
Reds fans will undoubtedly get on the Alisson hype train and they can see the shot-stopper in action when the club faces Serie A side Napoli on Saturday (2230 IST) at the Aviva Stadium in Dublin, Ireland.
It may have taken a world record £66.6million fee but Liverpool fans are more confident than ever that Alisson Becker will provide the answer to their goalkeeping travails after watching one of his first training sessions for his new club.
"It has been a great day which I had been looking forward to", Alisson told Liverpool's official website.
"I hope I can help and bring something extra to the team".
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"It's also showed me that the team are very well adapted to it and everyone seems to be physically fit, not to say technically - they're all great players after all".
"I'm very happy to have them alongside me and to be a part of this project that Liverpool have and the great work they have been doing over recent years".
My first impression tells me it won't be hard for me here - it's a great squad formed by great players and brilliant professionals.
Strootman sent a message to Dutch worldwide teammate Georginio Wijnaldum on Instagram, bemoaning the fact Alisson has left Roma for Liverpool - also acknowledging the Reds winning the Champions League semi-final tie between the two teams earlier this year.
"He's a big player, at times he did well for us", Adam said.