Andy Murray says he will not change his game style as he keeps Amelie Mauresmo on as coach. The 27-year-old is experiencing a substantial change to his team, having announced this week that he is no longer working with longtime assistant coach Dani Vallverdu or trainer Jez Green. But Mauresmo, who began with Murray before Wimbledon this year, will stay in her position.

Murray said the Frenchwoman, like his previous coach Ivan Lendl, wants him to be assertive during play.

"That's the sort of mindset and style that I want to play," he told the press during his appearance in the International Tennis Premier League (ITPL).

"Sometimes this year it hasn't been possible, but you know, we've only spent six or seven weeks together since Wimbledon."

Murray won only one game against Roger Federer at the ATP World Tour Finals, his most recent tour match. His friend and fellow Brit Tim Henman, now retired, criticized Murray's tactics during the tournament.

The two-time Grand Slam champion has been slow to return to his previous level since undergoing back surgery in 2013; former No. 1 Lendl stopped coaching Murray a few months later, before Miami. Murray did, however, win three tournaments following the U.S. Open to finish in the Top 8 and qualify for the season-ending championship.

"It wasn't my best season but it got better as the year went on," he said. "Yes, there was a few periods of the year where I played a couple of bad matches, where my level dropped and I wasn't expecting it."

Murray will resume training with Mauresmo following the ITPL. "The next sort of five, six weeks in the off-season and the build-up to the Australian Open I'll get to practice some things and work on some stuff," he said.

The newly-engaged Murray also spoke of his engagement to Kim Sears, saying, "We have a plan to get married next year, that's the plan but no dates were set yet."