The Parkhead manager had already recruited defender Efe Ambrose from Ashdod as well as bringing in Getafe forward Nicolas Fedor – known as Miku – and Nantes goalkeeper Lubos Kamenar on loan on what was a busy deadline day for the club on Friday.
Nouioui, 26, who spent the last three years with Spanish side, Deportivo La Coruna, is looking forward to playing for Celtic in the Champions League where they will come up against Barcelona, Benfica and Spartak Moscow over the coming months.
“I’m absolutely delighted to sign for Celtic,” he told the club’s website yesterday. “Celtic is a huge club with a magnificent history and a fantastic support. I know all about the wonderful atmosphere at Celtic Park and I can’t wait to play there.
“I know that Celtic already has a great squad of players and I’m very much looking forward to joining up with my team-mates. I hope to play my part in bringing success to the club and, of course, I’m also looking to competing in the Champions League.”
Lennon, who is looking for Nouioui to “bring another dimension to the team”, is hoping the international break will allow some of his injured players to recover, with Scott Brown, Georgios Samaras, Charlie Mulgrew, Joe Ledley, Beram Kayal and Dylan McGeouch all missing the draw with Hibs. “He leads the line well and has a decent record of scoring in the second layer of the Spanish league,” said Lennon.