Tunisia international Lassad Nouioui has joined Celtic on a two-year deal, the SPL champions have announced.
The 26-year-old is the latest addition to Neil Lennon's squad, following the arrival of defender Efe Ambrose, striker Miku Fedor and goalkeeper Lubos Kamenar.
Nouioui, who spent the last three years with Spanish side Deportivo La Coruna, said he is "absolutely delighted" to sign for the Bhoys.
"Celtic is a huge club with a magnificent history and a fantastic support," Nouioui said.
"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."