The pair previously worked or two years.
Andy Murray will reunite with his former coach Ivan Lendl.
The world number two has confirmed that the pair will start working again from Monday ahead of the Aegon Championships. The appointment follows the departure of Murray's previous coach Amelie Mauresmo last month.
Lendl was Murray's mentor between 2012 and 2014, in which time Murray won Wimbledon, the US Open and an Olympic gold medal.
Since Lendl stepped down from his position, Murray has lost three Grand Slam finals.
ANDY MURRAY ON LENDL: "It all happened really, really quickly...he messaged me yesterday and said 'let's do it.'"https://t.co/vA2RIAiNU5— BBC Tennis (@bbctennis) June 12, 2016
"Hopefully it will be for a long time, from my side. He's coming over, he'll be here for the tournament and it's good for him to spend a bit of time with the rest of the team as well to see how things work out. But provided everything's good, it will hopefully go on for a long time."
"I think the most successful period of my career was while I was working with Ivan. I know what he can offer. The experiences he had, I think psychologically he helped me in the major competitions and they're obviously the events I'm trying to win and am competing for."
Murray's main focus now is to disrupt the winning momentum that Djokovic has cultivated of late. The Serb has defeated Murray in all five of their Grand Slam meetings in Lendl's absence.