Chelsea are reported to have made a bid in the region of £27 million for Valencia midfielder Juan Mata.GettyImagesAndre Villas-Boas could turn to Juan Mata to add creativity to his side•  Keegan on AVB• AVB: Modric pursuit not up to me• Redknapp mulls Modric sale• Chelsea complete Lukaku deal• Wenger rules out Mata dealAndre Villas-Boas is known to be keen to add to his midfield, both to increase numbers and to inject creativity after the team struggled to provide record signing Fernando Torres with sufficient service after his move from Liverpool in January.Luka Modric is still said to be on the club's radar - though Villas-Boas told a press conference on Thursday that the continuation of the pursuit will be the "club's decision" - but