Miku, the on-loan Getafe striker, last night admitted he's worried by his lack of playing time at Celtic.

The Venezuelan hasn't started a game for the Parkhead club in their last four matches and has yet to score his first goal for Neil Lennon's side.

Miku explained his frustration at the way his time in Glasgow has started, thus: "Yes, I am a little worried about my situation. I'm on a season-long loan and I am happy in the sense that we are playing in the Champions League and we can win the league title.

"However, on a personal level, I was expecting this to be a big year for me and was hoping that my career would move up to a new level.

"However, I just have to be patient because there is still a long time left on my deal."

Miku revealed that Lennon has spoken to him about why he hasn't used him much so far. He said: "Every day is a new challenge for me in Scotland. Physically, football is different from what I was used to. If you make a foul in Spain, it's a yellow card. Here, it's play on.

"The manager has spoken to me and told me that, technically, I'm the best player we have, but, physically I'm not ready to compete in Scottish football and I have to be be patient and bide my time.

"I was happy with that assessment, because it is something that gives me encouragement, though, I want to be more involved.

"The truth is it is hard for me now because I am not being used and this is a new situation for me. I am finding it hard to adapt at the moment, but that's football for you.

"One day you are playing and the next you can be a back-up. I will have to work hard to reverse this situation.

"I admit it has been difficult for me in Scotland so far because the Scots have a different climate, different meals, different training times and a different mentality."