As the defending champion, Murray is due to open the 2017 Championships at Wimbledon with a match on Centre Court on Monday.
Even if he's healthy enough to play at Wimbledon, his lack of preparation on grass prior to the event is a concern.
The number one seed is now struggling with a hip injury and was forced to pull out of a scheduled exhibition match at the start of the week.
Murray was seen limping today as he practised at Wimbledon after not training for two days due to a sore hip.
Asked whether he was anxious about Murray on Thursday, Lendl replied: 'Not at all. "If the weather is good I am sure we will practice".
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Murray was due to take on Frenchman Lucas Pouille in the tournament in the first match, however, on Tuesday morning it was announced that he would not take to the court because his hip was "a bit sore", leaving his fans tensed.
The 30-year-old also practised with the Canadian teen Denis Shapovalov yesterday to mend the obstacle.
However, his coach Lendl insists he is "not at all" anxious about the injury and has been pleased by Murray's preparations for Wimbledon. I thought previous year was more hard because in two weeks we didn't finish one practice on our own terms.
The world No1 continues to be frustrated by that lack of matches he has had on grass following his straightest loss to the Australian "lucky loser" Jordan Thompson at Queen's last week.
His best showing this year was at the French Open where he reached the semi-finals but it was interesting to hear Stan Wawrinka's comment following his defeat of the Briton, when he pointed out: "Last year he was stronger".
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