Mata backs Costa to start scoring for Chelsea

The former Blues playmaker says he wants his compatriot to refind his form, while Atletico Madrid's Koke has also leant his support to his struggling former teammate

Manchester United star Juan Mata has backed international teammate Diego Costa to regain top form for club and country ahead of Spain's friendly against England on Friday.

Costa has struggled to replicate the form of his first season at Chelsea, with just three goals in 17 appearances in all competitions this term.

His struggles mirror those of his club, currently 16th in the Premier League table.