Barcelona have completed a deal to sign Borussia Dortmund forward Ousmane Dembele for an initial fee of £96.8m, potentially rising to £135.5m.

The 20-year-old France international signed a five-year contract at the Camp Nou alongside club president Josep Maria Bartomeu on Monday afternoon.

Dembele becomes the most expensive player in Barca's history and the second most expensive in world football, eclipsed only by Neymar's recent £200m move to Paris Saint-Germain.

Dembele, whose release clause stands at 400m euros (£369.6m), told the official Barca website: "I'm very happy to be here.

"It has always been my dream to be at Barcelona and now I'm here I'm very happy to have achieved my dream. It is the best club in the world with the best players in the world."

Upwards of 17,000 fans were reported to have gathered at the ground on Monday to catch a glimpse of the player, who inherits Neymar's number 11 shirt.

The former Rennes player's last appearance for Dortmund came in the German Super Cup on August 5.