The 28-year-old Senegal international will return to action in pre-season games having resolved his differences with the club over shirt sponsors Wonga.
Cisse, who is a Muslim, did not travel to the Magpies' training camp in Portugal after refusing to wear the Wonga shirt or training kit because of his religious beliefs.
Cisse told the club's official website, nufc.co.uk: "It has been a very difficult time for me and the club, and also for the fans.
"I have had some useful discussions with my club, my family and Islamic teachers in the last few weeks.
"After a huge amount of thought and reflection, I have made the decision to follow my team-mates and wear the kit.
"Now I think it is important for the team and the fans that we concentrate 100 per cent on football.
"Although I did not go to Portugal on the training camp, I was back here working hard on my fitness and preparing for the start of the new season.
"Since then, it has been great to be training with my team-mates again. I feel great and ready to go, and cannot wait to be out there against St Mirren on Tuesday and to play my part for the team.''
Religion v Football . a battle that Cisse should never be allowed to win!
Talk about ´two-faced´ . religion didn´t come into it when he was gambling in a Newcastle casino.
Source: Manchester City MAD