Liverpool defender Jose Enrique says the Reds fans can expect more from him once he settles in at the club.
"I know I'm not 100% because I have to train more with the team," Enrique told BBC Radio Merseyside.
"In the next few games if I continue to play it will be really easy to understand the players here. I have to get to know them more."
He added: "But I think it's fitness and that is normal, we've only played the first game and we need to get more fit. We have to think about the next game, as that is really important too."
Liverpool travel to Arsenal on Saturday looking for their first win of the season, and are without an away win against the Gunners since February 2000, with former striker Titi Camera scoring the winning goal.
But after completing his Anfield debut at the weekend, Enrique thanked the fans for the reception he had against the Black Cats.
"The atmosphere is amazing, but I played in Newcastle and they have really good fans too," the Spaniard continued.
"But I'm here and I'm accustomed to playing with fans like that. The fans here are very good."
Meanwhile, striker Nabil El Zhar has left Anfield after making 32 appearances in just shy of five years with the club.
The 24-year-old, who spent last season on loan at Greek side PAOK, has been released by the Reds and is poised to sign for Spanish side Levante.