Keita has joined Alisson Becker, Fabinho and Xherdan Shaqiri in arriving at Anfield, and the Guinean has suggested that the first-team squad contain the key components required to launch a bid for the top-flight crown.
The 23-year-old is quoted by Sky Sports News as saying: "I know we have enough quality. It's all about having the mindset and desire to want it and fight for it enough. I think that goes a long way, having that desire and belief.
"I'm someone who has this real winning mentality. I have a huge desire to win. That's why I'm aggressive in a positive sense on the field."
Liverpool begin the new campaign with a home fixture against West Ham United on August 12.