The American, who was appointed by the Lawn Tennis Association on Wednesday, expects to start making significant progress after the US hardcourt season.

"There's no magic pill to take that makes you a better player," Gilbert told The Times.

"Andy needs to become physically stronger, and over the next year that will be a big focus for us."

He added: "The best time to make changes will be after the Open; it's hard to make any real big impressions when he is going straight into tournaments."

Gilbert helped guide both Andre Agassi and Andy Roddick to the top of the world rankings and looks like being a hard task-master with 19-year-old Murray.

"If Andy Murray isn't an early-morning person, that's going to change," said Gilbert.

"The standards I set are those I learnt from my only coach, Tom Chivington from Foothills College in Los Altos, California - you put in an honest, hard day's work every day.

"It doesn't mean you are going to win every time but it sure gives you a better chance. Every day you want to be that little bit better.

"And it can never be the coach's way or the highway; the player will have his opinions and I hear Andy's are pretty strong. I'll certainly have mine and it's about where we meet."