BREMEN — Chelsea slumped to its first pre-season defeat Sunday as it was beaten 3-0 by Werder Bremen in Germany to spoil the return of Didier Drogba and the debut of goalkeeper Thibaut Courtois. Ivory Coast legend Drogba made his first appearance for Chelsea since scoring the penalty that won the 2012 Champions League in Munich when he came on as a second-half substitute for summer signing Diego Costa. Falcao sinks Arsenal Radamel Falcao scored his first goal since a six-month injury lay-off to earn Monaco a 1-0 win over Arsenal in the Emirates Cup friendly tournament in London Sunday. The Colombia striker netted with a powerful first-half header to give Monaco victory in their final pre-season friendly before they open their Ligue 1 campaign at home to Lorient next Sunday. Arsenal manager Arsene Wenger handed a full debut to £30 million ($50.4 million, 37.6 million euros) new signing Alexis Sanchez, but the Chilean was eclipsed by Falcao, who missed the World Cup after damaging knee ligaments in January. Monaco's win handed victory in the four-team tournament to Valencia, which beat Benfica 3-1 earlier in the day at Arsenal's Emirates Stadium. Arsenal tackles Manchester City in the Community Shield at Wembley next weekend, before kicking off the Premier League season at home to Crystal Palace on Aug. 16. Real Madrid signs Navas Costa Rica goalkeeper Keylor Navas, one of the stars of this year's World Cup, has completed his move to Real Madrid from Levante, the European champions announced Sunday evening. “Real Madrid CF and Levante UD have reached an agreement for the transfer of Keylor Navas, who will be contracted to the club for the next six years,” read a statement on Madrid's website. The Spanish capital club added that Navas, 27, will be presented at its Santiago Bernabeu stadium Tuesday afternoon after undergoing a medical. Sports daily Marca, which is closely linked to Madrid, reported that the club have paid the 10 million-euro ($13.4m, £8m) release clause in Navas' contract. Navas, who has spent the last two seasons in La Liga with Levante, was outstanding during unfancied Costa Rica's run to the World Cup quarterfinals, where it lost on penalties to the Netherlands. He will compete with Iker Casillas for the goalkeeper's jersey in Real, with Diego Lopez expected to leave the club. — Agencies