Ivan Lendl has claimed that he could coach Andy Murray for the rest of the Scot's career.
Lendl, who won eight Grand Slams as a player, helped guide the 25-year-old to his first major triumph at the US Open in September after his appointment to Murray's team in December 2011.
"As long as it works for both of us, I can see myself being with him for the rest of his career," said the 52-year-old.
"I have a lot of plans where I would like to see Andy end up with his game."
World number three Murray ended the 2012 season with three ATP titles to his name.