Nottingham Forest have signed Moussa Niakhate from Mainz.

The 26-year-old has signed a three-year deal through to the summer of 2025.

Forest reportedly agreed a deal worth £8.6m plus £4.2m in add-ons to Mainz.

"For me, this a dream to come to England and to sign for such a historic club in Nottingham Forest," said the centre-back.

"The club is well known around the world and its fans are incredible."

Niakhate, who spent three years with Mainz, has been capped by France at under-19 through to under-21 level.