LONDON -- Chelsea has an agreement to sign Spain striker Diego Costa from Atletico Madrid. Dennis Johnson Celtics Jersey . Chelsea and Atletico announced the move in statements on Tuesday. Chelsea met Costas buyout clause, and Atletico says it insisted on a full buyout, after acceding to Costas request for a transfer to Chelsea. The Brazil-born Costa scored 35 goals last season to help Atletico win the Spanish league and reach the Champions League final, knocking out Chelsea in the semifinals. However, he failed to impress in Spains underwhelming title defence at the World Cup. Also on Tuesday, Chelsea announced a one-year contract extension for Australia goalkeeper Mark Schwarzer, who arrived on a free transfer from Fulham last summer and was backup to Petr Cech. Marcus Smart Celtics Jersey . This week they discuss the Philadelphia 76ers, Gregg Popovich, Royal and Ancient Golf Club and Bill Belichick. Kevin Mchale Celtics Jersey . -- Oakland Athletics third baseman Scott Sizemore has undergone surgery on his left knee to repair a torn anterior cruciate ligament. http://www.celticssale.com/kids-bill-russell-celtics-jersey/ .com) - New England Patriots starting center Bryan Stork will not play in Sundays AFC Championship against Indianapolis due to a knee injury the rookie sustained last week.Manor rookie Pascal Wehrlein caused an early red flag in Chinese GP qualifying when he crashed into the barriers on the Shanghai International Circuits pit straight. After a wet final practice, the majority of the water had cleared from the track by the time Q1 begun - and Manor sent Wehrlein straight out on the supersoft tyres.However, rounding the final corner to begin his opening timed lap, Wehrlein discovered to his cost that all the moisture hadnt quite cleared as he lost control on a lingering damp patch on the main straight. Opening the DRS flap just as he went through the water, the Germans MRT05 swapped ends on him and Wehrlein was sent into a collision course with the barriers. A subsequent red flag stopped the session, as trackside workers atttempted to dry that section of track. Red Auerbach Celtics Jersey. Watch the moment for yourself in the video above.Watch the Chinese GP on Sunday - LIVE ONLY on Sky Sports F1. The race starts at 7am, with build-up underway from 5.30am. Or watch without a contract for £6.99 on NOW TV. When is Chinese GP on Sky? All the broadcast times for the business end of the Shanghai weekend Also See: Qualy report: Nico on pole, Lewis last When is the Chinese GP on Sky? ' ' '