The forward returned to Melwood last week following a 16-day summer break after helping Senegal reach the final of the Africa Cup of Nations last month.
The No.10 came on as a 74th-minute substitute in Friday night's Premier League opener against Norwich City, and now believes he's in a sharp enough condition to appear in Jürgen Klopp's starting XI.
"Yes, I think I'm ready [to start]," he told a pre-match press conference in Istanbul on Tuesday. "Tiredness, I think, is here [pointing to his head] – for sure.
"I've been playing professional football a long time [and] I think I never even have holidays more than 20 days [for the last] seven years now.