Andy Murray wants a bigger commitment from new coach Amelie Mauresmo than he received from Ivan Lendl.
The 27-year-old Scot hopes Mauresmo passes her Wimbledon acid test with flying colours as he battles to retain his title at SW19 this summer.
Murray wants Mauresmo on the world circuit for more than the 20 weeks former coach Lendl was thought to be travelling when the pair ceased their relationship in March.
Former Wimbledon and Australian Open champion Mauresmo is on trial as Murray's coach for the grass season, getting off to the perfect start yesterday.
Murray dispatched Paul-Henri Mathieu with ruthless efficiency, winning 6-4 6-4 to set up a third-round tie with Radek Stepanek at the Queen's Club Aegon Championships today.
"I don't know exactly how many weeks Amelie would work yet," said Murray, after launching the defence of his Queen's title.
"But when I chatted to her, there was a number that I threw out, which is what I would like.
"We haven't agreed specifically on anything just yet, we'll see in a few weeks.
"There is a number of weeks I would like, and yes, that is more than with Ivan."
Mauresmo trained Murray for the first time yesterday morning.
Murray is the first grand slam winning male star to hire a female coach, drawing surprise from some quarters – but the reigning Wimbledon and Queen's champion said gender had little bearing in his choice.
"At first it (gender) was a consideration because it's been a few years since I've worked with a woman, but once the decision was made I haven't thought about it," he said. "It's more about the qualities she can bring that will help me and my tennis."