Arsenal have completed the signing of defender Mathieu Debuchy from Newcastle.

The French right back, who helped his country to the quarter-finals of the World Cup, has agreed a long-term contract.

Newcastle have also made their sixth summer signing.

After bringing in French forward Emmanuel Riviera from Monaco, Daryl Janmaat has joined Alan Pardew's side on a six-year deal.

The Dutch defender comes in as a replacement for Debuchy, who has moved to Arsenal.