• De Bruyne will join Chelsea at the start of next season• Has played Chelsea twice in this year's Champions LeagueChelsea have completed the signing of highly-rated midfielder Kevin de Bruyne from Genk, the Belgian club have announced.The 20-year-old has signed a five-and-a-half-year deal but will remain at the Belgian champions on loan until the end of the season.De Bruyne, who is predominantly a left-sided player, has been on Chelsea's radar for some time and has played twice against the London club in this year's Champions League group stages.A statement on Genk's website said: "The transfer of Kevin De Bruyne to Chelsea has been complete...