Chelsea have agreed terms with Stuttgart for the sale of defender Khalid Boulahrouz. The fee for the 26-year-old, whose stock rose considerably following his performances in Holland's brief but impressive Euro 2008 campaign, is expected to be in the region of £4million. Boulahrouz was surplus to requirements at Stamford Bridge and spent last season on loan at Spanish outfit Sevilla, where he struggled for form and fitness. Stuttgart boss Armin Veh told Bild newspaper: 'He is just the man we were lacking. He is one who is not scared of getting involved when needed.' After two disappointing seasons with Chelsea and Sevilla, Boulahrouz is heading back to Germany, where he enjoyed two productive seasons with Hamburg before making his £10million move to the Blues in 2006. A statement on Chelsea's official website, read: 'We would like to thank Khalid for his contribution while he was with Chelsea FC and would like to wish him luck at his new club.'