Celtic have signed midfielder Olivier Ntcham from Manchester City on a four-year deal.
Ntcham becomes manager Brendan Rodgers' third signing of the summer following the arrivals of winger Jonny Hayes and midfielder Kundai Benyu.
The 21-year-old Frenchman will not make his debut in the Champions League qualifier against Linfield on Friday as he is still working on his match fitness.
"It's a nice feeling to be here at Celtic and I want to win everything at Celtic as I have never won a trophy before," Ntcham told the club's website.
"I'm most looking forward to the derby and playing in the Champions League. I remember them beating Barcelona five years ago in the group stages.
"Not every club gets to play in this competition so I'm happy to have the chance to play there with Celtic."
Ntcham will link up in Glasgow with France U21 team-mate Moussa Dembele, who has briefed his compatriot on what to expect at his new club.
"We played together a long time ago when I was 15 or 16 years old," Ntcham said. "He told me the atmosphere, the fans, the stadium is all unbelievable."
Ntcham joined City from French side Le Harve in 2012, but never made an appearance for the Premier League club.
He has spent the past two seasons on loan at Serie A side Genoa, scoring three goals in 41 matches.