Chelsea striker Diego Costa has insisted that he's got to start scoring goals on the international scene for Spain.
As reported by AS, Costa, who featured in Spain's 1-0 Euro 2016 qualifying win over Macedonia last night, claims he's 'filled with ambition' when taking to the pitch with the national side.
Costa, though, has endured a tricky time with Spain, having only found the back of the net on one occasion in eight appearances.
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And, after failing to fire once again last night, the Brazilian-born forward has insisted that he's doing all he can to prove his credentials.
Speaking to AS, Costa stated: "I've got a lot to improve and I've got to start scoring goals. There will be no lack of effort on my part."
"I am always filled with ambition whenever I get called for the national team. On a personal level I am not happy because I didn't manage to score tonight although I'm happy with the victory. We've gained three points which are important for our qualification."
Chelsea in need
There's no doubt about it, it's also been a frustrating period for Costa on the club scene of late. Ultimately, with just one goal in his opening four Premier League games for the Blues this term, it just hasn't quite got going for him in west London.
One thing's for sure, he will be determined to make amends when Jose Mourinho's side travel to Merseyside to take on Everton this weekend. Costa and Co. could do with producing the goods at Goodison Park on Saturday, as the Blues go in search of climbing the Premier League table.
It looks set to be a huge couple of weeks for Costa, who will no doubt prove his critics wrong in the immediate future.
Chelsea fans: Do you expect Costa to get back to his best this weekend? Have your say below!