Euro 2016 qualifying: Diego Costa admits he didn't know he was suspended

Spain's Forward Diego Costa (L) shoots the ball past Macedonia's Defender Vanche Shikov during the Euro 2016 Group C qualifying

Diego Costa was completely unaware that he had received a one-match suspension for Spain after picking up a booking on Tuesday night in their 1-0 victory over Macedonia.

The 26-year-old will miss the chance to get his international career going when Luxembourg visit Logrono next month as he is suspended after seeing his third yellow card of the campaign against Macedonia.

"I'm suspended against Luxembourg? It's the first I've heard about it," the Chelsea striker said after the game.

He also discussed his need to improve and vowed to make the effort.

"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'll keep working hard at my club to improve.

"I am always filled with ambition whenever I get called for the national team. On a personal level I am not happy because I did not manage to score tonight."

Since turning his back on Brazil to play for his adopted country in 2013, Costa has scored just once in nine games with his solitary effort coming against minnows Luxembourg last October.