Andy Murray and Novak Djokovic will no longer work together, with the duo announcing their split earlier this week. And four-time Grand Slam champion Jim Courier has offered his theory about the separation.

Justine Henin suggests Novak Djokovic realized Andy Murray couldn't anymore provide him the motivation he needed and that's what prompted the current world No. 6 to make such a huge decision ahead of the French Open.

Novak Djokovic and coach Andy Murray ended their partnership after six months, they said Tuesday. Djokovic announced in November that he hired Murray. The 24-time Grand Slam winner was ranked No. 7 in the world at the time.