Paris - Monaco have strengthened their midfield in preparation for their first Champions League campaign in 10 years by signing Tiémoué Bakayoko from Stade Rennais, the club said on Monday.
The 19-year-old has joined on a five-year contract for a fee which media reports have put at eight million euros ($10.75 million) after an impressive breakthrough season with Rennes.
The defensive midfielder made 28 appearances in all competitions last term.
"I am going to discover a new club. Monaco are a club going places in French and world football so this is obviously a good thing. It's a new challenge and I think I am ready for it," said Bakayoko, who turns 20 next month.
Wealthy Monaco finished second in Ligue 1 last term but sold World Cup top scorer James Rodriguez to Real Madrid last month.