The Spain boss insists he still has the utmost faith in the misfiring forward but says that he wants to work on the Chelsea ace's behaviour
Spain coach Vicente Del Bosque still has faith in Diego Costa - but called on the volatile Chelsea striker to "smooth out his character".
Costa is in line to make his international return against England on the back of a six-match scoreless run at club level for the misfiring Premier League champion.
The 27-year-old was suspended for Spain's Euro 2016 qualifier against Luxembourg last month and as a result did not feature in Del Bosque's squad for the closing match of his country's successful campaign against Ukraine three days later.